US Department of Transportation

NHTSA’s Technical Report on the effectiveness of amber rear turn signals for reducing rear impacts.

The goal of this study was to provide better understanding of the consequences of older adults’ crash injuries on their health and functional performance -their ability to carry out normal activities – by addressing research questions.

NHTSA provides links to crash avoidance research documents.

The National Association of Motor Vehicle Administrators (AAMVA) and the National Highway Transportation Safety Administration (NHTSA) provides a driver fitness medical guideline booklet on its website. 

Brief summaries of research on alcohol-involved driving, drug-involved driving, occupant protection (e.g., seat belts, and child safety seats), speed and other unsafe driving behaviors. 

 By converting four-lane roadways to 3 (1 lane in each direction, with a center 2-way turning lane), road diets assist older drivers by making left turns safer, and help older pedestrians by reducing the crossing distance of the road.

A Case Study of Guidelines and Processes in Seven U.S. States. 

This volume updates the information presented in 2003 (Summary of Medical Advisory Board Practices in the United States).