NHTSA Search Results
https://www.nhtsa.gov/document/age-versus-experien... July 6, 2018
Event-triggered, video-based interventions can improve driving safety among young drivers. Nine states including Iowa allow drivers under 16 to operate motor vehicles but little is known about how younger drivers compare to16-year-old drivers in terms of risky driving behaviors. This project examined the effects of age, experience, and video-based feedback on the rate of unsafe driving events captured on video event recorders for 90 newly licensed teen drivers. Results show that young drivers who received feedback had lower rates of unsafe driving events relative to the control group. The results indicate that video-based feedback could have safety benefits for young drivers.
The Effect of High-Visibility Enforcement on Driver Compliance With Pedestrian Right-of-Way Laws: 4-Year Follow-Up Reporthttps://www.nhtsa.gov/document/effect-high-visibil... August 8, 2018
This is a follow-up to a previous study titled High-Visibility Enforcement on Driver Compliance With Pedestrian Right-of-Way Laws to determine the extent observed increases in driver yielding in the previous study persisted nearly 4 years after the high-visibility enforcement intervention program ended. The study involved no new enforcement or publicity. Observers collected data on staged and naturally occurring crossings at the same six sites used in the previous study and at the same six spillover effect sites where no enforcement had taken place. The same observation procedures were used as in the original study. Results showed yielding behavior continued on an upward trend with both the enforcement and generalization sites exhibiting significantly higher rates of driver yielding during the follow-up than at the end of the intervention almost 4 years earlier. Yielding rates averaged 76.5% at the enforcement sites and 77.0% at the generalization sites. Thus, above and beyond the significant increase documented by the original study from before to immediately after the intervention, this study showed an additional significant increase in yielding from the end of the intervention to the follow-up. The results suggest a notable and continuing increase in general deterrence, a fundamental change in driver behavior and courtesy to pedestrians crossing the road, or both. However, a caveat of the increased yielding results is that it is unknown if similar changes took place in surrounding localities that may suggest additional factors affecting change other than the HVE program.
State Blood Alcohol Concentration (BAC) Testing and Reporting for Drivers Involved in Fatal Crashes: Current Practices, Results, and Strategies, 1997-2009https://www.nhtsa.gov/document/state-blood-alcohol... August 1, 2012
This report documents current State blood alcohol concentration (BAC) testing and reporting practices and results for drivers involved in fatal crashes. It summarizes known BAC results by State for the years 1997 to 2009 for both fatally injured and surviving drivers. It provides an overview of State practices using information obtained from telephone discussions with all States and all NHTSA Regions. It documents case studies of 9 States (Alaska, Hawaii, Indiana, Kansas, Maryland, Missouri, New Mexico, Oklahoma, and South Dakota), each of which has improved or maintained high rates of BAC testing and reporting. Successful BAC testing and reporting involves three components: high testing rates, accurate and complete reporting, and careful management. This can be accomplished through laws, policies, or practices. The process involves testing, reporting, tracking, and follow-up. The context involves education, training, and management. A summary presents good practices and strategies for States that wish to improve their BAC testing and reporting.
Medical Review Practices For Driver Licensing Volume 1: A Case Study of Guidelines and Processes in Seven U.S. States (DOT HS 812 331)https://www.nhtsa.gov/document/medical-review-prac...
Medical Review Practices For Driver Licensing Volume 1: A Case Study of Guidelines and Processes in Seven U.S. States (DOT HS 812 331)
Traffic Tech: The Effect of High-Visibility Enforcement on Driver Compliance With Pedestrian Right-of-Way Laws: 4-Year Follow-Uphttps://www.nhtsa.gov/document/traffic-tech-effect... January 23, 2017
In large cities, pedestrians can account for 40% to 50% of traffic fatalities. In 2014 there were 4,884 pedestrian fatalities and about 65,000 injuries in the United States (NHTSA, 2015). Many of these incidents occur at crosswalks where drivers fail to comply with pedestrian crossing laws. Driver compliance increased in Gainesville, Florida, after applying NHTSA’s high-visibility enforcement (HVE) model to pedestrian right-of-way laws. This current study was a follow-up to the original Gainesville pedestrian HVE project.
NHTSA Light Vehicle Antilock Brake System Research Program Task 5.2/5.3: Test Track Examination of Drivers' Collision Avoidance Behavior Using Conventional and Antilock Brakeshttps://www.nhtsa.gov/document/nhtsa-light-vehicle...
From 2003. Numerous crash data statistical analyses conducted over the past few years suggest that, for automobiles, the introduction of four-wheel antilock brake systems (ABS) has produced net safety benefits much lower than originally expected. The studies indicate the apparent increase in single-vehicle crashes involving passenger cars equipped with four-wheel ABS almost completely offsets the safety advantage such vehicles have over their conventionally-braked counterparts. The National Highway Traffic Safety Administration (NHTSA) has developed its Light Vehicle Antilock Brake Systems (ABS) Research Program in an effort to determine the cause(s) of the apparent increase in fatal single-vehicle run-off-road crashes as vehicles undergo a transition from conventional brakes to ABS. As part of this program, NHTSA conducted research examining driver crash avoidance behavior and the effects of ABS on drivers' ability to avoid a collision in a crash-imminent situation. The study described here was conducted on a test track under dry and wet pavement conditions to examine the effects of ABS versus conventional brakes, ABS brake pedal feedback level, and ABS instruction on driver behavior and crash avoidance performance. This study found that drivers do tend to brake and steer in realistic crash avoidance situations and that excessive steering can occur. However, a significant number of road departures did not result from this behavior for either pavement condition. ABS was found to reduce crashes significantly on wet pavement as compared to conventional brakes.