About the research
Speeding, defined as exceeding the posted speed limit or driving too fast for conditions, contributes to approximately one-third of all traffic fatalities and costs society about $40.4 billion each year.
The guidelines developed for this project focus on two strategies to reduce speeding:
- Setting proper speed limits, which is key to ensuring reasonable and safe speeds
- Using dynamic speed feedback sign (DSFS) systems, traffic control devices that have been used successfully to reduce speeds
The guidelines include a summary of the current state of the practice and best practices for setting speed limits and a summary of best practices for using DSFS and recommendations on their use.