Reducing Motor Vehicle Accidents: Road Safety, Signal Controls, and Intersection Angles


Aaron M. Glennon (Editor)

Series: Government Procedures and Operations
BISAC: TRA001000

In 2021, motor vehicle crashes killed an estimated 42,915 people in the United States. The number of fatal traffic crashes represents only a fraction of the total number of crashes which occur on U.S. roadways every year. Chapter 1 discusses the safety of our nation’s roadways, explore programs and policies included in the Infrastructure Investment and Jobs Act to improve roadway safety, and learn from key stakeholders about their role in implementing these programs and other roadway safety strategies. Chapter 2 evaluates the safety effectiveness of adaptive signal control technologies (ASCTs) at urban corridors and will benefit safety and traffic engineers and safety planners by providing greater insight into how ASCTs impact intersection safety. Intersection crashes account for approximately 22 percent of fatal crashes and 40 percent of all crashes in the United States. When designing new roadways or retrofitting existing roadways, careful consideration should be given to mitigation measures for skewed intersections as discussed in chapter 3.

Table of Contents


Chapter 1. Addressing the Roadway Safety Crisis: Building Safer Roads for All
Committee on Transportation and Infrastructure

Chapter 2. Developing Crash Modification Factors for Adaptive Signal Control Technologies
Federal Highway Administration

Chapter 3. Impact of Intersection Angle on Highway Safety
Federal Highway Administration


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