TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-SO1E-RW-1: Evaluation of Data Needs, Crash Surrogates, and Analysis Methods to Address Lane Departure Research Questions Using Naturalistic Driving Study Data examines the statistical relationship between surrogate measures of collisions (conflicts, critical incidents, near collisions, or roadside encroachment) and actual collis...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-S09-RW-1: Site-Based Video System Design and Development documents the development of a Site Observer, a prototype system capable of capturing vehicle movements through intersections by using a site-based video imaging system. The Site Observer system allows for viewing crashes and near crashes as well as a basis for developing ...

TRB’s Strategic Highway Research Program (SHRP 2) Report S2-S05-RR-1: Design of the In-Vehicle Driving Behavior and Crash Risk Study provides a summary of the key aspects of the planning effort supporting the SHRP 2 Naturalistic Driving Study (NDS). SHRP 2 Safety Project S05: Design of the In-Vehicle Driving Behavior and Crash Risk Study (Study Design) designed the SHRP 2 NDS, which will collec...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-S03-RW-1: Roadway Measurement System Evaluation documents the evaluation of automated, mobile data-collection services to provide data on roadway features and characteristics considered important for safety analysis, especially analysis of data from the SHRP 2 Naturalistic Driving Study. This report is only available in electron...

TRB’s second Strategic Highway Research Program (SHRP 2) has released a report that provides an analysis plan for the SHRP 2 Naturalistic Driving Study (NDS) to help guide the development of Project S08, Analysis of In-Vehicle Field Study Data and Countermeasure Implications, and to help assist researchers planning to use the SHRP 2 NDS data. This publication is only available in electronic for...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-S01B-RW-1: Analysis of Existing Data: Prospective Views on Methodological Paradigms investigates structured modeling paradigms for the analysis of naturalistic driving data. This report is available only in electronic format.

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-S01A-RW-1: Development of Analysis Methods Using Recent Data introduces an approach to microscopic or individual event modeling of crash-related events, where driver actions, initial speeds, and vehicle locations are treated as inputs to a physical model describing vehicle motion. The report also illustrates how a trajectory mod...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R26-RR-2: Guidelines for the Preservation of High-Traffic-Volume Roadways provides suggested guidelines for the application of preservation treatments on high-volume roadways. The guidelines consider traffic volume, pavement condition, work-zone requirements, environmental conditions, and expected performance. Errata (October 20...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R26-RR-1: Preservation Approaches for High-Traffic-Volume Roadways documents the state of the practice of preservation treatment on asphalt and concrete pavements. The report focuses on treatments suitable for application on high-traffic-volume roadways but also discusses current practices for low-volume roadways.  The same...

TRB’s second Strategic Highway Research Program (SHRP 2) Renewal Project R23 has released a prepublication, non-edited version of a report titled Using the Existing Pavement In-Place and Achieving Long Life that describes a procedure for identifying when existing pavements can be used in place as part of the rehabilitation solution and the methods necessary to incorporate the original material ...

TRB’s second Strategic Highway Research Program (SHRP 2) Renewal Project R21 has released a prepublication, non-edited version of a report titled Composite Pavement Systems Volume 2: PCC/PCC Pavements that investigates the structural and functional performance of placing a relatively thin, high-quality PCC surface atop a thicker PCC layer. The first report in the series,  Composite Pa...

TRB’s second Strategic Highway Research Program (SHRP 2) Renewal Project R21 has released a prepublication, non-edited version of a report titled Composite Pavement Systems Volume 1: HMA/PCC Pavements that investigates the structural and functional performance of surfacing a new portland cement concrete (PCC) pavement layer with a high-quality hot mix asphalt (HMA) layer. The second report...

TRB’s second Strategic Highway Research Program (SHRP 2) Capacity Project C16 has released a prepublication, non-edited version of the SmartGAP User’s Guide. SmartGAP is a scenario planning software tool that synthesizes households and firms in a region and determines their travel demand characteristics based on their built environment and transportation policies. SHRP 2 Capacity Project C16 ha...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R15-RW: Integrating the Priorities of Transportation Agencies and Utility Companies examines current practices, opportunities for enhancement, and anticipated barriers for integrating utility and transportation agency priorities in highway renewal projects.  The report also explores 13 best practices that span the whole pro...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R15B-RW-1: Identification of Utility Conflicts and Solutions provides concepts and procedures to identify and resolve utility conflicts that public agencies and utilities can use to help improve the highway project development process. Tools described in the report include utility conflict matrices that enable users to organize,...