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Pages 194-219

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From page 194...
... 194 Other Practices This section discusses decision-making tools, other practices, emerging technologies, and successful policies and procedures of selected agencies. The following practices are covered in this section: • Smart work zone implementation tools 12.1 FHWA Work Zone ITS Implementation Guide and Tool 12.2 TxDOT Go/No-Go Decision Tool 12.3 MnDOT Work Zone ITS Decision Tree • Alternate contracting decision tools 12.4 Project Delivery Selection Matrix 12.5 Procurement Procedures Selection Matrix 12.6 Project Delivery Method Selection Guidance • Work zone safety and mobility assessment at the agency and project levels 12.7 Ohio DOT Mobility and Safety Performance Measures 12.8 MDSHA Work Zone Performance Monitoring Tool 12.9 Iowa DOT Statewide Smart Work Zone Program 12.10 Safety Assessment Tool for Construction Phasing Plans • Traffic control devices 12.11 Special-color Pavement Markings 12.12 Automated Truck-Mounted Attenuator 12.13 Green Lights on TMAs • Work zone operations 12.14 Rolling Roadblock Procedure for Temporary Lane Closures 12.15 Work Zone Cell Phone Restrictions • Lane closure policies and permitting systems 12.16 Colorado Lane Closure Strategy 12.17 MnDOT Lane Closure Manual 12.18 ODOT Permitted Lane Closure Schedule 12.19 Wisconsin Web-Based Lane Closure Permitting Systems 12.20 Caltrans Lane Closure System • e-Construction and partnering 12.21 e-Construction and Partnering 12.1 FHWA Work Zone ITS Implementation Guide and Tool FHWA developed the Work Zone ITS Implementation Guide in 2014 to assist in the design and implementation of ITSs in work zones (Ullman, Schroeder, and Gopalakrishna 2014)
From page 195...
... Other Practices 195 by illustrating how the systems-engineering process should be applied to determine the feasibility and design of a work zone ITS for a given application. Each key step is defined in each chapter -- assessment of needs; concept of development and feasibility; detailed system planning and design; procurement; system deployment; and system operation, maintenance, and evaluation.
From page 196...
... 196 Strategies for Work Zone Transportation Management Plans Scoring Factors Scoring Range Criteria Score Impact from local traffic generators Significant-local facilities are large enough to have official destination signs on the Interstate highway such as conference centers, sports arenas etc., so they produce large surges in traffic before/after large events (20 points) Moderate-Local businesses or public facilities generate traffic volumes that routinely backup the on/off ramps such as morning and evening rush hours (10 points)
From page 197...
... Other Practices 197 YESNO NO YES List Project Attributes Review Project Goals Identify Project Constraints Assess Primary Evaluation Factors: 1) Delivery Schedule 2)
From page 198...
... 198 Strategies for Work Zone Transportation Management Plans 12.5 Procurement Procedures Selection Matrix The CDOT procurement decision-support tool, called the Procurement Procedures Selection Matrix (PPSM) , provides a risk-based and objective selection approach to choosing a procurement procedure from the three common procurement criteria of low bid, best value, and best qualified.
From page 199...
... Other Practices 199 method was pursued. The PDMSG provides progressive evaluation tools to determine the optimal PDM, with each tool scalable to the appropriate level of effort based on the type and size of the project.
From page 200...
... 200 Strategies for Work Zone Transportation Management Plans Figure 12.4. Snapshot of ODOT queue notification (Credit: ODOT)
From page 201...
... Other Practices 201 total number of hours for same month for the respective historic year)
From page 202...
... Figure 12.6. ODOT work zone crash summaries (Credit: ODOT)
From page 203...
... Other Practices 203 Figure 12.8. Snapshot of Maryland's Work Zone Performance Monitoring Tool (Credit: MDSHA)
From page 204...
... 204 Strategies for Work Zone Transportation Management Plans 12.9 Iowa DOT Statewide Smart Work Zone Program In 2014, the Iowa DOT initiated a new effort to identify key work zones across the state as traffic-critical projects (https://sites.google.com/site/iowatcp/home)
From page 205...
... Other Practices 205 can also be viewed at http://www.511ia.org/. In addition to the SWZ tools alerting the TMC, engineers and inspectors working on specific projects will automatically receive text messages when slowdowns of more than 5 minutes happen in a work zone equipped with speed sensors.
From page 206...
... 206 Strategies for Work Zone Transportation Management Plans collected by cameras, sensors, and message signs are connected to a web-based performancemonitoring tool, which is updated every night to add information about the previous day to the view. All historical data are retained from the database, so information from any time interval can be queried at any point.
From page 207...
... Other Practices 207 A study (Brown et al.
From page 208...
... 208 Strategies for Work Zone Transportation Management Plans Figure 12.12. Sample output of the safety assessment tool (Credit: University of Missouri)
From page 209...
... Other Practices 209 To assess the driver behavior aspects of orange markings in a simpler environment, WisDOT conducted a matched-pair with and without study on two bridge re-decking projects on I-94 near Oconomowoc (Shaw, Chitturi, and Noyce 2017; Shaw et al.
From page 210...
... 210 Strategies for Work Zone Transportation Management Plans near Fort Collins. Colorado has also used its ATMA in rural areas away from heavy or mixed traffic.
From page 211...
... Other Practices 211 planning and coordinating a rolling roadblock, executing a rolling roadblock, and developing a rolling roadblock planning checklist. The Connecticut DOT allows rolling roadblocks during the installation of temporary lane closures on limited-access highways.
From page 212...
... 212 Strategies for Work Zone Transportation Management Plans into effect on October 1, 2016, and drivers caught in violation face fines of up to $40 on first offense and up to $100 for subsequent offenses. Appendix L provides bill text (2015 Assembly Bill 198)
From page 213...
... Other Practices 213 • Procedures for changing the closure hours during the construction and variance request process. • Flowcharts (Figure 12.17)
From page 214...
... 214 Strategies for Work Zone Transportation Management Plans time of day for planned lane closures based on the number of available lanes and traffic- count data. The purpose of the lane closure manual is to provide information useful for advance planning of lane closures that will minimize traffic impacts and motorist delays while promoting safety for work crews and the traveling public.
From page 215...
... Other Practices 215 Figure 12.19. MnDOT lane closure manual showing allowable lane closures (Credit: MnDOT)
From page 216...
... 216 Strategies for Work Zone Transportation Management Plans The user searching for permitted lane closure times inputs the following information: year of the last ADT count, district number, county, route, and the section of that route. The search yields a table -- similar to the screenshot in Figure 12.20 -- showing the permitted lane closure times.
From page 217...
... Other Practices 217 • Provide a standard interface for lane closure operations, closure tracking, and data retrieval for WisDOT regional offices statewide; • Facilitate data sharing with WisDOT applications that require lane closure data from 511 traveler information, the statewide TOC, inconvenience map production, and oversize/ overweight permitting; • Improve the completeness, reliability, and timeliness of lane closure data on state highways; • Archive LCS data in the WisTransPortal system for future analysis and integration with other WisDOT/UW-TOPS Lab traffic-engineering applications and research; and • Integrate historical traffic-flow data and capacity information to calculate available closure thresholds. The LCS is the single source of Wisconsin Interstate, U.S., and state highway lane and rampclosure information.
From page 218...
... 218 Strategies for Work Zone Transportation Management Plans Operational since April 2008, the LCS facilitates work zone acceptance and monitoring at WisDOT statewide TOC and regional transportation offices and provides real-time lane closure information to the Wisconsin 511 traveler information system. 12.20 Caltrans Lane Closure System On January 15, 2016, Caltrans revised the 2015 Standard Specifications, Section 12-4.02C(2)
From page 219...
... Other Practices 219 The e-construction system has the potential to increase the quality, efficiency, environmental sustainability, and productivity of the construction industry at large, while saving printing costs, time, postage, and document storage and adding communication efficiencies. Construction partnering is a project management practice whereby transportation agencies, contractors, and other stakeholders create a team relationship of mutual trust and improved communications.

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