National Cooperative Research and Evaluation Program


Congress has established the National Cooperative Research and Evaluation Program (NCREP) to examine priority highway safety countermeasures.

The program is jointly managed by Governors Highway Safety Association (GHSA) and the US Department of Transportation National Highway Traffic Safety Administration (NHTSA). The individual projects are administered by NHTSA.

Congress sets aside approximately $2.5 million in federal funding each fiscal year to conduct the program.


GHSA annually solicits potential highway safety related research or evaluation concepts from its member states and collaborates with NHTSA to select projects.

The GHSA NCREP Committee plays the lead role in solicitation and evaluation of submitted research topics. Committee members are Audrey Allums, Montana (Chair); Mike Prince, Michigan; and Kristy Rigby, Utah.

At the staff level, the program is supported by the GHSA Executive Director and Senior Director of Communications and Programs, as well as a highway safety research liaison.

Current Projects

The projects listed below are being or will be performed in-house or contracted out by NHTSA and the Volpe Center. The duration of these projects varies from 18 months to five years. Final research reports and findings will be shared with State Highway Safety Offices (SHSOs) and their partners to further their work toward saving lives and preventing injuries.


Examination of the Legalization and Decriminalization of Marijuana on the Driving While Impaired (DWI) System

This project will examine the impact of medical marijuana and the legalization and decriminalization of marijuana on the driving while impaired (DWI) system.

Status: Phase I summary report under review.

Collect Drug Use Data from Drivers Arrested for DUI or DUID

This project will examine the prevalence of drug use among drivers arrested for DWI and/or DUID through self-reported data and/or biological samples.

Status: A kickoff meeting has been held and project tasks are underway.

Summarize Major Data Sources of Drugged Driving Information

This project will identify sources of data on drug use and drugged driving as well as synthesize the information and illustrate strategies for pulling together information across data sources.

Status: A statement of work is under development.

State of the Practice of State-Managed Ignition Interlock Programs

This project will provide an inventory of the key program elements of state-managed ignition interlock device (IID) programs and how states manage IID data.

Status: A kickoff meeting has been held and project tasks are underway.

Summary of THC Per Se Limits

NHTSA will develop a white paper to summarize the current research on the connection between THC use and driving performance and crash risk; current DUID laws with per se limits; and the consequences of adoption these limits.

Status: Project tasks are currently underway.

Use of Oral Fluid Testing Devices

This project will determine the use of on-site oral fluid testing devices in the U.S. and abroad and examine the protocols for using these devices as well as legal issues regarding their use.

Status: A statement of work is under development.

Lab Test of Oral Fluid Devices

This project will conduct research to determine the accuracy and sensitivity of on-site drug testing devices in a controlled laboratory setting.

Status: A kickoff meeting has been held and project tasks are underway.

Other Issues

Motorcycle Conspicuity and Crash Risk

This project will explore how riders can increase their conspicuity and consider incentives that may encourage riders to wear high-visibility clothing or modify the visibility of their motorcycle.

Status: A kickoff meeting has been held and project tasks are underway.

Hazard Perception and Distracted Driving Training Intervention for Teens

This research will include a study exploring the effects of adding modules to train novice drivers in hazard identification and the dangers of electronic device usage.

Status: Recently selected.


State of Knowledge and Practice for Automated License Plate Readers

This project will examine issues associated with the use of Automated License Plate Readers for traffic safety in general and for license suspension, revocation, and restrictions in particular.

Status: A kickoff meeting has been held and project tasks are underway.

Meta-Analysis of Research on Electronic Speed Feedback Signs

This project will synthesize existing studies to evaluate the effectiveness of speed feedback signs to serve as a resource for highway safety practitioners interested in reducing speeding and speeding-related crashes.

Status: This project is currently underway.

Study of Law Enforcement Liaison Programs

This research will conduct a scan of LEL programs across the states to better understand the current landscape and program effectiveness, and develop and validate LEL performance measures and program management guidelines.

Status: A kickoff meeting has been held and project tasks are underway.

Study to Determine any Change in Law Enforcement Support for High Visibility Enforcement (HVE) and Approaches for Promoting Law Enforcement Participation in HVE

This research will produce a report detailing the types of approaches used and best practices in promoting law enforcement participation in traffic safety programs.

Status: Recently selected.

Tools For Determining Enforcement Level

This project will develop tools to help law enforcement agencies and their partners calculate the level of enforcement needed to effectively deter dangerous driver behavior.

Status: Recently selected.

Tools to Develop Performance Standards For Grant-Funded Traffic Enforcement Initiatives

This project will analyze best approaches to developing performance standards for traffic enforcement activities and create a tool for implementation of these approaches.

Status: Recently selected.

Communications & Messaging

Review of Risk Communication Strategies and Existing Impaired and Distracted Driving Safety Messages

This project will review theories of behavior change and risk communication and how they are relevant to the impaired and distracted driving messages and materials currently in use.

Status: A kickoff meeting has been held and project tasks are underway.

Social Media for Highway Safety

This research will investigate the extent to which state highway safety offices are using social media and the opportunities, benefits and challenges it poses.

Status: A kickoff meeting has been held and project tasks are underway.

Risk Communications Strategies for Occupant Protection

This project will consider how risk communication strategies can be used to most effectively deliver the occupant protection safety messages.

Status: A kickoff meeting has been held and project tasks are underway.