U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
The predicted number of intersection-related crashes equals the product of the average total crash frequency for intersection-related crashes and the crash modification factor for the left turn lanes with respect to total crashes and the local calibration factor. (Equations with turn lane CMF and the local calibration factor)
Total crashes is calculated as:
Fatal plus injury crashes is calculated as:
Return to page 124.