Browse All Topics

Transportation

NCHRP Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on ...

More
NCHRP Synthesis 428: Practices and Procedures for Site-Specific Evaluations of Earthquake Ground Motions

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 428: Practices and Procedures for Site-Specific Evaluations of Earthquake Ground Motions identifies and describes current practice and available methods for evaluating the influence of local ground conditions on earthquake design ground motions ...

More
NCHRP Legal Research Digest 57: Tort Liability Defense Practices for Design Flexibility

TRB's National Cooperative Highway Research Program (NCHRP) Legal Research Digest 57: Tort Liability Defense Practices for Design Flexibility focuses on tort liability defense practices and cases involving the exercise of discretion in design. The report is designed to help provide ...

More
NCHRP Report 714: Special Mixture Design Considerations and Methods for Warm-Mix Asphalt: A Supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary

TRB's National Cooperative Highway Research Program (NCHRP) Report 714: Special Mixture Design Considerations and Methods for Warm-Mix Asphalt: A Supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary presents special mixture design considerations and methods ...

More
NCHRP Report 703: Guide for Pavement-Type Selection

TRB's National Cooperative Highway Research Program (NCHRP) Report 703: Guide for Pavement-Type Selection includes processes for conducting systematic evaluations of pavement alternatives and for making decisions on pavement-type selection.

The processes may be used for both agency-based and contractor-based ...

More
NCHRP Report 697: Design Guidelines for Increasing the Lateral Resistance of Highway-Bridge Pile Foundations by Improving Weak Soils

TRB's National Cooperative Highway Research Program (NCHRP) Report 697: Design Guidelines for Increasing the Lateral Resistance of Highway-Bridge Pile Foundations by Improving Weak Soils examines guidance for strengthening of soils to resist lateral forces on bridge pile foundations.

The ...

More
NCHRP Synthesis 415: Design Fires in Road Tunnels

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 415: Design Fires in Road Tunnels information on the state of the practice of design fires in road tunnels, focusing on tunnel fire dynamics and the means of fire management for design ...

More
NCHRP Synthesis 417: Geometric Design Practices for Resurfacing, Restoration, and Rehabilitation

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 417: Geometric Design Practices for Resurfacing, Restoration, and Rehabilitation documents the current state-of-the-practice related to nonfreeway resurfacing, restoration, and rehabilitation projects.

Appendix G, Summary of Good Practices: Incorporating Safety into Resurfacing ...

More
NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary

TRB's National Cooperative Highway Research Program (NCHRP) Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary incorporates the many advances in materials characterization and hot-mix asphalt (HMA) mix design technology developed since the conclusion of the Strategic Highway ...

More
NCHRP Report 683: Protocols for Collecting and Using Traffic Data in Bridge Design

TRB's National Cooperative Highway Research Program (NCHRP) Report 683: Protocols for Collecting and Using Traffic Data in Bridge Design explores a set of protocols and methodologies for using available recent truck traffic data to develop and calibrate vehicular loads for ...

More