U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Safety Assessment Method: SPF with CMF Weighted with Observed Crashes
Project Phase: Alternative Analysis
Project Type: 4R
Related Task: Interchange Justification Request
Calculation Method: Hand Calculated (Tool based example included in Problem 3.4)
Comments: This example problem demonstrates how to estimate the expected number of crashes for an urban freeway loop ramp.
Level of Analysis: Advanced
Note: See table 3 for a full definition of Project Type designations.
[ Return to section A-3.4 ]