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Filters: National Cooperative Highway Research Program NCHRP × 2021 2021 ×
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Revised Clear-Water and Live-Bed Contraction Scour Analysis Training Manual  (2021)

Revised Clear-Water and Live-Bed Contraction Scour Analysis  (2021)

LED Roadway Lighting: Impact on Driver Sleep Health and Alertness  (2021)

Criteria for Restoration of Longitudinal Barriers, Phase II  (2021)

Updating the AASHTO LRFD Movable Highway Bridge Design Specifications  (2021)

Development of a Comprehensive Approach for Serious Traffic Crash Injury Measurement and Reporting Systems  (2021)

Recommended Guidelines for the Selection of Test Levels 2 Through 5 Bridge Railings  (2021)

Safety Prediction Methodology and Analysis Tool for Freeways and Interchanges  (2021)

Guidelines for Cost-Effective Safety Treatments of Roadside Ditches  (2021)

Safety Performance of Part-Time Shoulder Use on Freeways, Volume 2: Conduct of Research Report  (2021)

Developing Guidelines for Integrating Safety and Cost-Effectiveness into Resurfacing, Restoration, and Rehabilitation (3R) Projects  (2021)

Evaluation and Synthesis of Connected Vehicle Communication Technologies  (2021)

Selecting Ramp Design Speeds, Volume 2: Conduct of Research Report  (2021)

Mainstreaming System Resilience Concepts into Transportation Agencies: A Guide  (2021)

Safety Performance of Part-Time Shoulder Use on Freeways, Volume 1: Informational Guide and Safety Evaluation Guidelines  (2021)

Deploying Transportation Resilience Practices in State DOTs  (2021)

Attracting, Retaining, and Developing the Transportation Workforce: Transportation Planners  (2021)

Diverging Diamond Interchange Informational Guide, Second Edition  (2021)

Roadside Hardware Replacement Analysis: User Guide  (2021)

Guidelines for Integrating Safety and Cost-Effectiveness into Resurfacing, Restoration, and Rehabilitation (3R) Projects  (2021)

Protocols for Network-Level Macrotexture Measurement  (2021)

Application of Crash Modification Factors for Access Management, Volume 1: Practitioner's Guide  (2021)

Principles and Guidance for Presenting Active Traffic Management Information to Drivers  (2021)

Transportation System Resilience: Research Roadmap and White Papers  (2021)

Resilience Primer for Transportation Executives  (2021)

Guidebook for Data and Information Systems for Transportation Asset Management  (2021)

Fix It, Sign It or Close It: State of Good Repair in an Era of Budget Constraints  (2021)

Selecting Ramp Design Speeds, Volume 1: Guide  (2021)

Asphalt Binder Aging Methods to Accurately Reflect Mixture Aging  (2021)

Validation of a Performance-Based Mix Design Method for Porous Friction Courses  (2021)

Application of Crash Modification Factors for Access Management, Volume 2: Research Overview  (2021)

Maintenance and Surface Preparation Activities Prior to Pavement Preservation Treatments  (2021)

Guidance to Predict and Mitigate Dynamic Hydroplaning on Roadways  (2021)

Practices for Project-Level Analyses for Air Quality  (2021)

Practices for Construction-Ready Digital Terrain Models  (2021)

Entrained Air-Void Systems for Durable Highway Concrete  (2021)

Mitigation of Weldment Cracking in Steel Highway Structures Due to the Galvanizing Process  (2021)

Proposed Modification to AASHTO Cross-Frame Analysis and Design  (2021)

Development of a Posted Speed Limit Setting Procedure and Tool  (2021)

Long-Term Aging of Asphalt Mixtures for Performance Testing and Prediction: Phase III Results  (2021)

Temporary Pavement Markings Placement and Removal Practices in Work Zones  (2021)

Investigating the Relationship of As-Constructed Asphalt Pavement Air Voids to Pavement Performance  (2021)

Improved Prediction Models for Crash Types and Crash Severities  (2021)

Practices for Selecting Pedestrian and Bicycle Projects  (2021)

Repair and Maintenance of Post-Tensioned Concrete Bridges  (2021)

Use of Vehicle Probe and Cellular GPS Data by State Departments of Transportation  (2021)

Practice and Performance of Cold In-Place Recycling and Cold Central Plant Recycling  (2021)

Portland Cement Concrete Pavement Joint Sealant Practices and Performance  (2021)

Summary State DOT Practices for Developing and Implementing TSMO Plans  (2021)

A Pandemic Playbook for Transportation Agencies  (2021)