13.1 Crash Frequency

1. Crash: an event that produces injury and/or property damage, involves a motor vehicle in transport, and occurs on a trafficway or while the vehicle is still in motion after running off the trafficway.

2. Crash frequency: refers to the counts the number of crashes that have occurred at a given location (along a roadway section or at an intersection) over a specified time period, typically three to five years.