National Highway Traffic Safety Administ

State Traffic Information Systems Improvements

Promising Practices

This report highlights the major State-level accomplishments since 2005 in improving data systems used in traffic safety decision making. A nationwide...

Cooperative Intersection Collision Avoidance System for Violations (Cicas-v)

Database Structure

This report documents the process required for data exchange between a conductor of a field operational test (FOT) and an independent evaluator based ...

Evaluation of State Motorcycle Safety Programs

This report describes the current efforts States are undertaking to promote motorcycle safety, drawing on a survey received from State Highway Safety ...

Incidence Rates of Pedestrian and Bicyclist Crashes by Hybrid Electric Passenger Vehicles

An Update

Hybrid electric (HE) passenger vehicles first became available to consumers in 2000, and their numbers as well as their proportion of the passenger ve...

The Effectiveness of Daytime Running Lights for Passenger Vehicles

The analysis evaluates the effects of daytime running lights (DRLs) against three types of target crashes: (1) two-passenger vehicle crashes excluding...

Characteristics of Law Enforcement Officers' Fatalities in Motor Vehicle Crashes

The Fatality Analysis Reporting System (FARS) is maintained by National Highway Traffic Safety Administration. The FARS is currently the only database...

Injury Vulnerability and Effectiveness of Occupant Protection Technologies for Older Occupants and Women

The report includes many estimates of the fatality- or injury-risk increase for aging a year, or the risk for a female relative to a male of the same ...

Lower-Extremity Injuries in Motorcycle Crashes

This study aims to define the characteristics of lower-extremity injuries among motorcyclists involved in traffic crashes. The results of this study p...

Tire Pressure Special Study

Data Documentation

NHTSA's National Center for Statistics and Analysis (NCSA) conducted the Tire Pressure Special Study (TPSS). The TPSS was designed to assess to what e...

The Effectiveness of Underride Guards for Heavy Trailers

This report is a statistical analysis of several crash databases to determine the effectiveness of underride guards at preventing fatalities and injur...