Segment Accident Rate:

The following formula is used to calculate segment rates:

Accident rate variables:

Variable name:                 Represents:        

AccidentRate =                 Segment accident rate expressed in accidents per 100 million vehicle miles/kilometers.        

AccCount =                 Number of accidents in the intersection        

Volume =                 Average annual daily traffic on section (vehicles per day)        

Length =                 Length of section in miles/kilometers.        

Days =                 Number of days in the study (diagram)