U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Safety Assessment Method: SPF with CMF Adjustment
Project Phase: Preliminary & Final Design
Project Type: NL
Related Task: Selecting Specific Design Elements and Their Dimensions
Calculation Method: Hand Calculated (Tool based example included in Problem 4.1)
Comments: This example problem demonstrates how to calculate the predicted number of crashes for a four-lane urban arterial following the construction of a median and the addition of lighting and auto speed enforcement.
Level of Analysis: Intermediate
Note: See table 3 for a full definition of Project Type designations.
[ Return to Appendix A-4.1 ]