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NCHRP Web-Only Document 386 Quantifying the Impacts of Corridor Management Metro Analytics Charlotte, NC Modern Mobility Atlanta, GA University of Utah Metropolitan Research Center Salt Lake City, UT Quetica St. Paul, MN Texas A&M Transportation Institute College Station, TX Conduct of Research Report for NCHRP Project 08-124 Submitted July 2022 © 2023 by the National Academy of Sciences. National Academies of Sciences, Engineering, and Medicine and the graphical logo are trademarks of the National Academy of Sciences. All rights reserved. NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Systematic, well-designed, and implementable research is the most effective way to solve many problems facing state departments of transportation (DOTs) administrators and engineers. Often, highway problems are of local or regional interest and can best be studied by state DOTs individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation results in increasingly complex problems of wide interest to highway authorities. These problems are best studied through a coordinated program of cooperative research. Recognizing this need, the leadership of the American Association of State Highway and Transportation Officials (AASHTO) in 1962 initiated an objective national highway research program using modern scientific techniquesâthe National Cooperative Highway Research Program (NCHRP). NCHRP is supported on a continuing basis by funds from participating member states of AASHTO and receives the full cooperation and support of the Federal Highway Administration (FHWA), United States Department of Transportation, under Agreement No. 693JJ31950003. COPYRIGHT INFORMATION Authors herein are responsible for the authenticity of their materials and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein. Cooperative Research Programs (CRP) grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, FAA, FHWA, FTA, GHSA, NHTSA, or TDC endorsement of a particular product, method, or practice. It is expected that those reproducing the material in this document for educational and not-for-profit uses will give appropriate acknowledgment of the source of any reprinted or reproduced material. For other uses of the material, request permission from CRP. DISCLAIMER The opinions and conclusions expressed or implied in this report are those of the researchers who performed the research. They are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; the FHWA; or the program sponsors. The Transportation Research Board does not develop, issue, or publish standards or specifications. The Transportation Research Board manages applied research projects which provide the scientific foundation that may be used by Transportation Research Board sponsors, industry associations, or other organizations as the basis for revised practices, procedures, or specifications. The Transportation Research Board, the National Academies, and the sponsors of the National Cooperative Highway Research Program do not endorse products or manufacturers. Trade or manufacturersâ names appear herein solely because they are considered essential to the object of the report. The information contained in this document was taken directly from the submission of the author(s). This material has not been edited by TRB.
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C O O P E R A T I V E R E S E A R C H P R O G R A M S CRP STAFF FOR NCHRP WEB-ONLY DOCUMENT 386 Waseem Dekelbab, Deputy Director, Cooperative Research Programs, and Manager, National Cooperative Highway Research Program Jennifer L. Weeks, Senior Program Officer Anthony Avery, Senior Program Associate Natalie Barnes, Director of Publications Heather DiAngelis, Associate Director of Publications Jennifer Correro, Assistant Editor NCHRP PROJECT 08-124 PANEL Field of Transportation PlanningâArea of Planning Methods & Processes William D. Gardner, Minnesota Department of Transportation, St. Paul, MN (Chair) Michael S. Bruff, Capital Area MPO, Clayton, NC Christopher Clow, Vermont Agency of Transportation, Barre, VT Sonna Lynn Fernandez, Idaho Transportation Department, Boise, ID Nishant N. Kukadia, Novus Integrated Transportation Solutions, Austin, TX Veronica Murphy, New Jersey Department of Transportation, Trenton, NJ Jonathan R. Russell, Nashville, TN Hong Zhang, Louisiana Department of Transportation and Development, Baton Rouge, LA Sarah Sun, FHWA Liaison
Contents | Quantifying the Impacts of Corridor Management iv TABLE OF CONTENTS TABLE OF CONTENTS ......................................................................................................................................... iv TABLE OF FIGURES............................................................................................................................................ xiii TABLE OF TABLES.............................................................................................................................................. xiv Introduction ........................................................................ 1 Corridors Bind the Nation Together. It Matters How We Manage Them. .................................................... 1 What the Playbook is About ............................................................................................................................... 2 Topics the Playbook Addresses ...................................................................................................................... 2 How to Use the Plays ..................................................................................................................................... 4 NCHRP Objectives .............................................................................................................................................. 6 Define the Corridor and Its Impacts ...................................... 7 Define a Corridor as an End-to-End Connection: Connecting Resources, Markets, and People ....................... 7 Define the Scope and Role of a Corridor in Context .......................................................................................... 8 Get Oriented: Select Characteristics to Define the Corridor Management Regime ......................................... 9 Define the Corridor in Aspirational Terms ....................................................................................................... 11 Take Inventory of the Corridor ............................................ 12 Define the Corridorâs Market Area and Planning Time Horizon....................................................................... 12 Construct a Corridor Balance Sheet ................................................................................................................. 15 Use the Corridor Balance Sheet to Evaluate Choices ....................................................................................... 18 Account for Technology ................................................................................................................................... 19 Case Example: US-54/400 Andover, KS ............................................................................................................ 20 Build Durable Coalitions and Processes ............................. 21 Secure the Ingredients for a High-Impact Corridor Coalition ........................................................................... 21 Select Partners Appropriate for the Context.................................................................................................... 23 Align Management Roles with Stakeholder Perspectives ................................................................................ 24 Identify Impact Indicators for Each Group ....................................................................................................... 24 Follow Programmatic Steps to Build a Coalition .............................................................................................. 25 Implement a Framework for Governance and Accountability ......................................................................... 27 I-15 Case Study ................................................................................................................................................ 27 Build a Spatial Analysis Environment ................................. 28 Understanding Spatial Corridor Impact Analysis .............................................................................................. 29 Applications of Spatial Corridor Analysis.......................................................................................................... 29 I-695 in Maryland Case Example ...................................................................................................................... 30 I-45 Corridor in Texas - TOSTADA ..................................................................................................................... 31
Contents | Quantifying the Impacts of Corridor Management v Select Strategies and Supporting Methods/Data ............... 33 Make an Adaptable Strategy: Flexible Agreements and Trigger Points .......................................................... 33 Balance the Demand and Supply Sides of the Equation .................................................................................. 36 Next-Generation Tools and Reference Points for Corridor Improvement Strategies ...................................... 39 Balance Competing Uses and Sources of Value .................. 40 Expand on the Corridor Balance Sheet ............................................................................................................ 40 Consider Innovative Design Techniques .......................................................................................................... 42 Include Four Functional Areas When Developing Strategies ........................................................................... 44 Case Study: Balancing Freight and Passenger Travel with Community ................................................... 47 The Minneapolis Upper Harbor ........................................................................................................................ 47 Evaluate the Effectiveness of Corridor Strategies ................ 48 Ex-Ante, Ex-Post, and Benchmarking Approaches ........................................................................................... 48 Accounting for Wider Impacts and Context ..................................................................................................... 50 Communicating about Performance ................................................................................................................ 51 Case Example: Florida DOT District 4 ............................................................................................................... 55 Futureproofing a Corridor .................................................. 56 The Value of Scenario Planning ........................................................................................................................ 57 Decision Making within Scenario Planning ...................................................................................................... 58 Determining the Key External Drivers or Forces that Could Influence a Corridor ........................................... 59 Tracking the Drivers: Leading Indicators or Signposts ..................................................................................... 59 Changing Dynamics: Revisiting the Drivers ...................................................................................................... 60 Corridor Management Playbook Appendixes .................................................................................................. 61 Appendix 1 Literature Review............................................. 62 1.1 Introduction ............................................................................................................................................... 62 1.2 Quantifying Impacts ................................................................................................................................... 63 1.3 State of the Practice in Corridor Management .......................................................................................... 63 1.4 Big Data and Optimization in Corridor Management ................................................................................. 64 1.4.1 Traditional Corridor Management Performance Measures ................................................................ 64 1.5 The 7-D Framework .................................................................................................................................... 76 1.6 Conclusions ................................................................................................................................................ 80 1.7 Bibliography ............................................................................................................................................... 81 Appendix 2 State of the Practice Review ............................ 84 2.1 Introduction and Executive Summary ........................................................................................................ 84 2.2 Initial Observations from Practice .............................................................................................................. 85 2.2.1 Corridor Management means different things to different people .................................................... 85 2.2.2 Management is historically about speed, capacity, reliability, and safety ......................................... 86
Contents | Quantifying the Impacts of Corridor Management vi 2.3 Evolution of Corridor Management Paradigms .......................................................................................... 88 2.3.1 Contexts for Current Corridor Management Practice ......................................................................... 88 2.3.2 Home Rule and Land-Use Planning Authority ..................................................................................... 88 2.3.3 Long-Range Planning .......................................................................................................................... 88 2.3.4 Visioning .............................................................................................................................................. 91 2.3.5 Corridor Planning ................................................................................................................................ 91 2.3.6 Planning is critical to project development ......................................................................................... 92 2.4 What is Corridor Management? It Depends⦠............................................................................................ 92 2.4.1 Early Corridor Plans: Connecting Products to Markets ....................................................................... 93 2.4.2 ITS & IVHS: Corridor Planning Migrates to a Technology/Operations Focus ...................................... 94 2.4.3 Transportation Systems Management and Operations (TSMO) or ICM 2.0 ....................................... 96 2.5 Corridor Management on Suburban Arterials ............................................................................................ 96 2.5.1 State of the Practice vs Best Practice in Corridor Network Design ...................................................... 98 2.5.2 The Distressed Status of Land-Uses along Many Suburban Arterials.................................................. 99 2.5.3 Corridor Impacts in the Development Lifecycle ................................................................................... 99 2.5.4 State of the Practice in Successful Land-Use and Transportation Integration .................................. 101 2.5.5 Status of Demographic Inequities along Suburban Arterials ............................................................ 102 2.6 Existing Frameworks for Monitoring Performance .................................................................................. 103 2.7 Current Status of Methods, Measures, and Data ..................................................................................... 107 2.7.1 Prominent Objectives: Improve Mobility and Safety ......................................................................... 109 2.7.2 Objective: Economic Benefits ............................................................................................................ 110 2.7.3 Objective: Improve Accessibility ........................................................................................................ 110 2.7.4 Objective: Livability/Walkability ....................................................................................................... 110 2.7.5 Objective: Sustainability .................................................................................................................... 111 2.8 Conclusions and Gap Analysis .................................................................................................................. 111 2.8.1 Gap: A Need for Acknowledging Trade-Offs ..................................................................................... 111 2.8.2 Gap: Long-Range Planning ................................................................................................................ 111 2.8.3 Gap: Performance-Based Planning and Programming (PBP&P) ....................................................... 114 2.8.4 Gap: Joint Transportation/Land-Use Visioning ................................................................................. 114 2.8.5 Gap: Corridor Planning ...................................................................................................................... 115 2.8.6 Gap: Stratified Return on Investment ............................................................................................... 116 2.8.7 Gap: Explore the Role of Corridor Management in Induced Demand ............................................... 117 2.8.8 Gap: Life-Cycle Fiscal and Operational Sustainability ....................................................................... 117 2.9 Emerging Frameworks for Planning and Measuring Corridor Performance ............................................ 118 2.9.1 Contextually-Based Corridor Planning, Management, and Performance ......................................... 120 2.9.2 The 7-D Framework ........................................................................................................................... 120 2.9.3 Corridor Optimization and Big Data .................................................................................................. 120 2.10 Summary ................................................................................................................................................ 121 Appendix 3 Case Research and SWOT .............................. 122 3.1 Executive Summary .................................................................................................................................. 122 3.1.1 I-90/94 System Review ..................................................................................................................... 123 3.1.2 I-95/85 System Review ..................................................................................................................... 125 3.1.3 I-45 Inter-Regional Corridor in Texas ............................................................................................... 126 3.1.4 I-15 Inter-Regional Corridor from Canada to California ................................................................... 127 3.2 SWOT Overview & Rationale .................................................................................................................... 133 3.2.1 Impact Measures and Management by Coalitions ........................................................................... 135
Contents | Quantifying the Impacts of Corridor Management vii 3.2.2 Critical Aspects of Evaluating Corridor Impact .................................................................................. 136 3.3 Nested Scanning Approach ...................................................................................................................... 140 Impact Measures for Corridor Systems and Components ............................................................................. 142 3.4. I-90/94 Corridor System ......................................................................................................................... 142 3.4.1 Overview ........................................................................................................................................... 142 3.4.2 Active Coalitions Partners and Inter-Regional Approaches to Assessing Corridor Impacts .............. 143 3.4.3 Coalition #1: Great Northern Corridor.............................................................................................. 144 3.4.4 Coalition #2: The North/West Passage ............................................................................................ 149 3.4.5 Coalition #3: The Gary-Chicago-Milwaukee (GCM) Corridor Coalitionâs Legacy .............................. 153 3.4.6 Coalition #4: Smart Belt ................................................................................................................... 156 3.4.7 Selected Observations: Metropolitan Areas ..................................................................................... 159 3.4.8 Corridor âStopâ #2: Madison, WI ITS Strategic Plan ......................................................................... 160 3.4.9 Corridor âStopâ #3: Minneapolis/St. Paul, MN ................................................................................. 164 3.4.10 Corridor âStopâ #4: Met Councilâs Integration of Land-Use into Transportation Planning ............ 168 3.4.11 Corridor âStopâ #5: MnDOTâs Utilization of StreetLight Data for Truck Trips within the I-94 Corridor ................................................................................................................................................................... 171 3.4.12 Corridor âStopâ #6: TPIMS Truck Parking System ........................................................................... 173 3.4.13 I-90/94 System Takeaways ............................................................................................................ 175 3.5 Eastern Seaboard (I-95/85) Corridor System ........................................................................................... 179 3.5.1 Overview ........................................................................................................................................... 179 3.5.2 Active Coalitions and Partners .......................................................................................................... 179 3.5.3 Inter-Regional System-Level Indicators and Measures ..................................................................... 181 3.5.4 Selected Observations: Metropolitan Areas ..................................................................................... 182 3.5.5 Corridor Stop #1: Downeaster ........................................................................................................... 183 3.5.6 Corridor âStopâ #2: Boston, MA ........................................................................................................ 187 3.5.7 Ultra-Corridor âStopâ #3: âCorridor Nâ US 219 in Pennsylvania ........................................................ 190 3.5.8 Corridor âStopâ #4: Richmond, VA .................................................................................................... 194 3.5.9 Corridor âStopâ #5: 15-501 in NC ...................................................................................................... 198 3.5.10 Corridor âStopâ #6: I-95 (North Carolina) ........................................................................................ 201 3.5.11 Corridor âStopâ #7: Atlanta, GA ...................................................................................................... 207 3.5.12 Corridor Stop #8: South East Florida ............................................................................................... 216 3.5.13 Eastern Seaboard/I-95 & I-85 System Takeaways .......................................................................... 219 3.6 I-45 Inter-Regional Corridor System ........................................................................................................ 222 3.6.1 Overview ........................................................................................................................................... 222 3.6.2 Active Coalitions and Partners .......................................................................................................... 226 3.6.3 Inter-Regional System-Level Indicators and Measures ..................................................................... 228 Selected Observations: Metropolitan Areas ................................................................................................. 230 3.6.4 Corridor âStopâ #1: Houston, TX ....................................................................................................... 230 3.6.5 Corridor âStopâ #2: Dallas, TX .......................................................................................................... 232 3.6.6 Corridor âStopâ #3: Texas Central Railway ....................................................................................... 235 3.6.7 Other Selected Observations ............................................................................................................. 237 3.6.8 I-45 System Takeaways .................................................................................................................... 237 3.7 I-15 Corridor System ................................................................................................................................ 240 3.7.1 Overview ........................................................................................................................................... 240 3.7.2 Active Coalitions and Partners .......................................................................................................... 242 3.7.3 Inter-Regional System-Level Indicators and Measures ..................................................................... 244 Selected Observations .................................................................................................................................... 244 3.7.4 Corridor âStopâ #1: Main Street in Logan, UT .................................................................................. 244
Contents | Quantifying the Impacts of Corridor Management viii 3.7.5 Corridor âStopâ #2: Wasatch Front Region ....................................................................................... 248 3.7.6 Corridor âStopâ #3: Utah County Corridor Choke Points ................................................................... 267 3.7.7 Corridor âStopâ #4: Alameda Corridor.............................................................................................. 269 3.7.8 I-15 System Takeaways .................................................................................................................... 276 3.8 Other Observations .................................................................................................................................. 279 3.8.1 Corridor âStopâ 1: I-70 ....................................................................................................................... 279 3.9 Case Study Takeaways for Framework Development .............................................................................. 283 3.9.1 Scale and Geography ........................................................................................................................ 284 3.9.2 Alignment with Role .......................................................................................................................... 285 3.9.3 Comprehensive Time-Series Measurement ....................................................................................... 285 3.9.4 Data Governance and Organization ................................................................................................. 289 3.9.5 Coordination and Communication .................................................................................................... 290 3.9.6 Path Forward for Next-Generation Corridor Framework .................................................................. 291 3.9.7 Conclusion ......................................................................................................................................... 292 3.10 Corridor and Network Capacity Methodologies and Calculators ........................................................... 298 3.10.1 Freeway Corridor Person-Trip Calculator ........................................................................................ 298 Access: The Corridor and Network Multimodal Capacity Calculators are available on the National Academies Press website (nap.nationalacademies.org) by searching for NCHRP Web-Only Document 386: Quantifying the Impacts of Corridor Management. ........................................................................................................... 299 3.10.2 Sustainability Scores ....................................................................................................................... 300 3.10.3 Regional and Study Area Network Analysis .................................................................................... 300 How does this help corridor management? ................................................................................................... 302 3.11 Supporting Documentation ............................................................................................................... 303 Appendix 4 Corridor Impact Concepts .............................. 309 4.1 Objective and Scope ................................................................................................................................. 309 Introduction ............................................................................................................................................... 310 4.2 Managing Corridors for Impact ................................................................................................................ 310 4.3 Decision Points and Attributes ................................................................................................................. 311 4.3.1 Scale, Geography, and Complexity .................................................................................................... 311 4.3.2 Alignment of Roles ............................................................................................................................ 313 4.3.3 Times Series Management ................................................................................................................ 315 4.3.4 Data Availability, Standardization, and Organization ...................................................................... 317 4.3.5 Communication, Coordination and Partnering ................................................................................. 317 4.4 New Challenges ........................................................................................................................................ 318 Appendix 5 Steps and Methods ....................................... 319 Implementing the Steps and Methods ........................................................................................................... 319 5.1 Integrating Programmatic Steps and Methods into a Holistic Process of Impact Based Corridor Management .................................................................................................................................................. 319 5.1.1 Defining the Corridor Management Effort ........................................................................................ 320 5.1.2 Construct the Impact Management Regime ..................................................................................... 322 5.1.3 Select and Apply Quantitative Impact Methods ............................................................................... 324 5.2 Next Generation Corridor Management .................................................................................................. 326 5.2.1 Managing Corridors for Impact ......................................................................................................... 326
Contents | Quantifying the Impacts of Corridor Management ix 5.2.2 Guidance for Implementing Programmatic Steps, Policy Considerations, and Implementation Concerns ..................................................................................................................................................... 329 5.2.3 Time Series Management ................................................................................................................. 330 5.2.4 Communication ................................................................................................................................. 330 5.2.5 Emerging Challenges and Innovative Solutions................................................................................. 330 Examples of Successful Practices & New Impact ............................................................................................ 331 Methods & Procedures ............................................................................................................................... 331 5.3 Infrastructure Impact: TOSTADA & Holistically Managing the Corridor Infrastructure ............................ 332 5.3.1 Data and Overview of Procedure....................................................................................................... 333 5.3.2 Considering Data Layers .................................................................................................................... 334 5.3.3 Mapping and Indexing Data.............................................................................................................. 335 5.3.4 Data Inputs ........................................................................................................................................ 335 5.3.5 Process .............................................................................................................................................. 340 5.3.6 Outputs ............................................................................................................................................. 340 5.3.7 Application Case Example ................................................................................................................. 341 5.3.8 Results ............................................................................................................................................... 342 5.3.9 Key Takeaways .................................................................................................................................. 345 5.3.10 Relationship to Other Tools and 7-Ds .............................................................................................. 345 5.4 Impact on Development Readiness: Master Architecture & Managing the Corridor System Blueprint ... 346 5.4.1 Background and Introduction ........................................................................................................... 346 5.4.2 Data and Overview of Procedure ...................................................................................................... 347 5.4.3 Key Benchmark Summary ................................................................................................................. 350 5.4.4 Method for Preparing Starting Data ................................................................................................. 350 5.4.5 Computing Corridor Measurements .................................................................................................. 353 5.4.6 Describe outputs ............................................................................................................................... 353 5.4.7 Application Cases in Georgia and Utah ............................................................................................. 354 Application in Atlanta, Georgia .................................................................................................................. 354 5.4.8 The Math of Atlantaâs I-85 Corridor .................................................................................................. 354 5.4.9 Overview Map ................................................................................................................................... 355 5.4.10 Intersections per Square Mile .......................................................................................................... 355 5.4.11 Facility Mile Visual Comparison ...................................................................................................... 356 5.4.12 Lane-Miles per Square Mile............................................................................................................. 357 5.4.13 VMT Capability per Square Mile ....................................................................................................... 357 5.4.14 Conclusion ....................................................................................................................................... 358 5.4.15 Application in Utah County, Utah .................................................................................................... 359 5.4.16 Takeaways ...................................................................................................................................... 364 5.5 Impact on Freight Markets: 7D Freight Supply & Demand Assessment ................................................... 365 5.5.1 Data and Overview of Procedure ...................................................................................................... 365 5.5.2 Data Inputs ................................................................................................................................... 367 5.5.3 Computing Corridor Measurements .................................................................................................. 368 5.5.4 Application Case Example ................................................................................................................. 369 5.5.5 Density .............................................................................................................................................. 369 5.5.6 Diversity ............................................................................................................................................ 370 5.5.7 Design ............................................................................................................................................... 371 5.5.8 Destination Accessibility .................................................................................................................... 372 5.5.9 Distance to Alternatives .................................................................................................................... 372 5.5.10 Demand Management .................................................................................................................... 373 5.5.11 Demographics ................................................................................................................................. 374
Contents | Quantifying the Impacts of Corridor Management x 5.5.12 Takeaways ...................................................................................................................................... 374 5.6 Impact on Communities: 7D Framework and Methods for Assessing the Built Environment .................. 375 5.6.1 Section 1: Data and Overview of Procedure .................................................................................... 375 5.6.2 Outputs D-variables .......................................................................................................................... 378 5.6.3 Indices ............................................................................................................................................... 378 5.6.4 Application and Case Analysis ........................................................................................................... 379 5.6.5 Takeaways ........................................................................................................................................ 383 5.7 Impact on Technology Utilization: Assessing and Tracking Corridor Technology Profile .......................... 384 5.7.1 Data and Overview of Procedure ...................................................................................................... 384 5.7.2 Procedure .......................................................................................................................................... 386 5.7.3 Outputs ............................................................................................................................................. 389 5.7.4 Application Case examples ................................................................................................................ 389 5.7.5 Low .................................................................................................................................................... 396 5.7.6 Moderate .......................................................................................................................................... 396 5.7.7 High ................................................................................................................................................... 396 5.7.8 Takeaways ........................................................................................................................................ 397 5.8 Measuring Corridor Walkability ............................................................................................................... 398 5.8.1 Section 1: Data and Overview of Procedure ...................................................................................... 398 5.8.2 Corridor Walkability Scoring Tool ...................................................................................................... 398 The Walkability Calculator is available on the National Academies Press website (nap.nationalacademies.org) by searching for NCHRP Web-Only Document 386: Quantifying the Impacts of Corridor Management. ................................................................................................................................... 399 5.8.3 What is Being Measured? ................................................................................................................. 400 5.8.4 Section 2: Outputs ............................................................................................................................. 400 5.8.5 Data âingredientsâ required for sketch-level analysis ....................................................................... 401 5.8.6 More detailed analysis ...................................................................................................................... 403 5.8.7 Application Case Example ................................................................................................................. 404 5.8.8 Takeaways from This Methodology .................................................................................................. 406 5.9 Testing Integrated Supply and Demand Strategies: Potential for a Generalized 7D Calculator. ............. 407 5.9.1 Data and Overview of Procedure ...................................................................................................... 407 5.9.2 OUTPUTS ....................................................................................................................................... 408 5.9.3 Expected Use in Final Research Products .......................................................................................... 414 5.10 Corridor and Network Capacity Methodologies and Calculators ........................................................... 415 5.10.1 Freeway Corridor Person-Trip Calculator ........................................................................................ 415 Access: The Corridor and Network Multimodal Capacity Calculators are available on the National Academies Press website (nap.nationalacademies.org) by searching for NCHRP Web-Only Document 386: Quantifying the Impacts of Corridor Management. ........................................................................................................... 416 5.10.2 Sustainability Scores ....................................................................................................................... 417 5.10.3 Regional and Study Area Network Analysis .................................................................................... 417 How does this help corridor management? ................................................................................................... 419 5.11 Technology Readiness & Utilization Report Card ................................................................................... 420 Appendix 6 Methods for the Corridor Orientation Tool ....... 427 6.1 A Testable Corridor Orientation Methodology ......................................................................................... 428 6.2 From Steps to Methods ............................................................................................................................ 429 6.3 Step 1- Define Corridors in Terms of Geographic Context ....................................................................... 430 6.4 Step 2- Define Corridors in Terms of Primary and Secondary Purpose/Function ..................................... 431
Contents | Quantifying the Impacts of Corridor Management xi 6.5 Step 3- Define Corridor in Terms of Modal/Alternatives Access .............................................................. 432 6.6 Step 4- Define Corridors in Terms of Community (Mainstreet) ............................................................... 434 6.7 Corridor Orientation Profiles & Typologies .............................................................................................. 435 Appendix 7 Corridor Orientation Tool Interactive File (xls) . 436 Appendix 8 Corridor Orientation Tool User Guidance ........ 437 8.1 Background............................................................................................................................................... 437 8.2 Hypothetical Example: I-95, Boston to Washington D.C. ......................................................................... 437 8.3 Step 1 â Geographic Context .................................................................................................................... 437 8.3.1 Step 1a .............................................................................................................................................. 437 8.3.2 Step 1b â Inter-Regional Worksheet ................................................................................................. 438 8.3.3 Step 1c â Intra-Regional Worksheet .................................................................................................. 439 8.4 Step 2: Purpose and Functions ................................................................................................................. 442 8.5 Step 3: Alternative Mode Options ............................................................................................................ 443 8.6 Step 4: Community Integration ................................................................................................................ 444 8.7 Processing and Results ............................................................................................................................. 445 8.7.1 Applying the Codes ............................................................................................................................ 445 8.7.2 Final Recommendations .................................................................................................................... 446 8.8 Using the Results ...................................................................................................................................... 447 8.8.1 Enhancements That May Be Developed Soon ................................................................................... 447 Appendix 9 Corridor Innovation Database Interactive File (xls) ......................................................... 450 Appendix 10 7-D Calculator Interactive File (xls) .............. 451 Appendix 11 7-D Calculator Methods .............................. 452 Impact on Communities: 7D Framework and Methods for Assessing the Built Environment ....................... 452 11.1 Methodology .......................................................................................................................................... 452 11.2 Selection of Corridor impact areas ......................................................................................................... 452 11.3 Final sample............................................................................................................................................ 453 11.3.1 Description of D variables ............................................................................................................... 453 11.3.2 Density ............................................................................................................................................ 454 11.3.3 Diversity .......................................................................................................................................... 454 11.3.4 Design ............................................................................................................................................. 454 11.3.5 Destination Accessibility.................................................................................................................. 454 11.3.6 Distance to Transit .......................................................................................................................... 455 11.3.7 Demographics ................................................................................................................................. 455 11.3.8 Demand Management .................................................................................................................... 455 11.4 D variables calculation............................................................................................................................ 455 11.4.1 Data sources and variables ............................................................................................................. 456 11.4.2 Variables and description ................................................................................................................ 457
Contents | Quantifying the Impacts of Corridor Management xii 11.4.3 Multilevel logistic regressions ......................................................................................................... 458 11.5 Results .................................................................................................................................................... 458 11.5.1 Descriptive statistics........................................................................................................................ 458 11.5.2 Internal trips .................................................................................................................................... 460 11.5.3 Mode choice for walking trips ......................................................................................................... 461 11.5.4 Mode choice for transit trips ........................................................................................................... 461 11.5.5 Vehicle miles traveled (VMT) .......................................................................................................... 462 11.6 Conclusion .............................................................................................................................................. 462 Appendix 12 Spatial Environment .................................... 464 12.1 Background ............................................................................................................................................ 464 12.2 Why Establish Spatial Corridor Management Impact Analysis .............................................................. 465 12.3 Key Steps Needed to Establish a Spatial Corridor Impact Computing Environment .............................. 466 12.3.1 Step One: Determine the Geographic Area of Interest for Spatial Corridor Impact Analysis .......... 467 12.3.2 Step Two: Identify the Skills and Tools Available for Spatial Corridor Impact Analysis ................... 468 12.3.3 Step Three: Assess the Data Available for Spatial Corridor Impact Analysis ................................... 470 12.3.4 Step Four: Select the Most Important Performance Goals for Corridor Management ................... 474 12.3.5 Step Five: Understand Spatial Corridor Impact Analysis Measurement Tools ................................ 474 12.4 The TOol using STAcked DAta (TOSTADA) .............................................................................................. 476 12.4.1 7-D Integration ................................................................................................................................ 480 12.4.2 Profiling ........................................................................................................................................... 482 12.4.3 Step Six: Quantify Corridor Impacts Using a Spatial Corridor Impact Analysis Tool ....................... 484 12.4.4 Data and Overview of Procedure .................................................................................................... 484 12.4.5 Considering Data Layers ................................................................................................................. 484 12.4.6 Mapping and Indexing Data ........................................................................................................... 485 12.4.7 Data Inputs...................................................................................................................................... 486 12.4.8 Process ............................................................................................................................................ 491 12.4.9 Outputs ........................................................................................................................................... 491 12.4.10 Combinations of Tools ................................................................................................................... 492 12.5 Advice for Creating the Spatial Environment for Quantifying Corridor Impacts .................................... 493 12.5.1 Clearly Define Goals and Objectives ................................................................................................ 493 12.5.2 Perform a Baseline Assessment and Then Measure Routinely ....................................................... 493 12.5.3 Leverage Available Data ................................................................................................................. 494 12.5.4 Take Advantage of the Focus on Performance Management ......................................................... 494 12.5.5 Develop Good Data Governance Practice ....................................................................................... 494 12.5.6 Communication Among Stakeholders is Critical ....................................................................... 494 12.5.7 Maintain and Use the Spatial Analysis Environment Once in Place ................................................ 494 12.6 Conclusion .............................................................................................................................................. 495
Contents | Quantifying the Impacts of Corridor Management xiii TABLE OF FIGURES Figure 1 Summary of Quantifying the Impacts of Corridor Management Playbook ............................................ 5 Figure 2: Minnesota's Inter-Regional Corridor System Defined by Trade Centers ................................................. 7 Figure 3: Corridor Management Framework from Defining Corridors through Selecting Indicators..................... 9 Figure 4: StepWise Corridor Orientation Method ............................................................................................... 10 Figure 5: Critical Elements for A Durable and Effective Coalition ........................................................................ 21 Figure 6: Corridor Framework .............................................................................................................................. 26 Figure 7: I-15 Mobility Alliance Alt Rt Study (2017) .............................................................................................. 27 Figure 8: Spatial Environment Created for the I-695 Corridor in Maryland Using TOSTADA ............................... 31 Figure 9: Spatial Environment Created for the I-45 Corridor in Texas Using TOSTADA ....................................... 32 Figure 10: Components of Next Generation ......................................................................................................... 33 Figure 11: Components of Demand and Supply Strategies .................................................................................. 36 Figure 12: 7-D Variables for Managing Demand................................................................................................... 37 Figure 13: Access Density Analysis Example ......................................................................................................... 43 Figure 14: Source: Freight Train to Community Prosperity, Center for Neighborhood Technology, 2015 .......... 44 Figure 15: Four Functional Areas of Leverage for Corridor Management Techniques ........................................ 46 Figure 16: Ex-ante, Ex-post and Benchmarking Approaches ................................................................................ 48 Figure 17: Use of mapping to evaluate effective grid-connectivity supporting corridors in the Atlanta Region. 51 Figure 18: Heat Map Demonstrating Walkability of A Main Street Corridor in Logan, Utah .............................. 52 Figure 19: Demographic Layout Summarizing Users of I-80 in Iowa .................................................................. 52 Figure 20: Florida Multimodal Performance Measures ........................................................................................ 55 Figure 21: Time horizon for future outcomes ...................................................................................................... 56 Figure 22: Scenario Planning Benefits .................................................................................................................. 58 Figure 23 Solution Development Process .......................................................................................................... 112 Figure 24. NCHRP 08-124 Original Framework ................................................................................................... 465 Figure 25. FMT Tool Page ................................................................................................................................... 471 Figure 26. TOSTADA Overview............................................................................................................................ 476 Figure 27. Spatial Environment Created for the I-45 Corridor in Texas Using TOSTADA ................................... 479 Figure 28. The 7-Ds ............................................................................................................................................. 480 Figure 29. Technology Profiling Analysis ............................................................................................................ 482 Figure 30. Walkability Profiling Analysis ............................................................................................................. 483 Figure 31. Congestion (Annual Delay per Mile) Example ................................................................................... 487 Figure 32. Congestion (Annual Congestion Cost) Example ................................................................................. 487 Figure 33. Safety (Property Damage Only Crashes) Example ............................................................................. 488 Figure 34. Safety (Injury Crashes) Example ........................................................................................................ 488 Figure 35. Pavement Condition (IRI) Example .................................................................................................... 489 Figure 36. Bridge Condition Example.................................................................................................................. 489 Figure 37. Freight Value (Annual Truck Commodity Value, $mil) Example ........................................................ 490 Figure 38. Freight Value (Truck Daily Volume) Example ..................................................................................... 490 Figure 39. Example of different indicator maps layered in TOSTADA ............................................................... 491
Contents | Quantifying the Impacts of Corridor Management xiv TABLE OF TABLES Table 1: Guidelines for Setting Corridor Market Area Boundaries ....................................................................... 13 Table 2: Account for Sources of Value .................................................................................................................. 16 Table 3: Key Resources Available from Different Coalition Partners .................................................................. 22 Table 4: Base and Alternate Scenarios Used in TOSTADA Analysis ...................................................................... 32 Table 5: Flexible Coalition "At a Glance" Table ..................................................................................................... 34 Table 6:"Trigger Point" Table ................................................................................................................................ 35 Table 7: Corridor Balance Sheet ........................................................................................................................... 41 Table 8: Corridor Strategies Check-List ................................................................................................................. 45 Table 9: Ex-ante, Ex-post, and Benchmarking ...................................................................................................... 49 Table 10: New and Innovative Methods for Quantifying Corridor Management Impacts ................................. 50 Table 11: Dashboard Elements for Relating Corridor Impact Status and Results ................................................. 53
