CMF / CRF Details

CMF ID: 2496

Change in median opening density from X to Y median openings

Description: Change the number of median openings for a raised median

Prior Condition: Greater or fewer number of median openings per mile

Category: Access management

Study: Modeling and Evaluating the Safety Impacts of Access Management (AM) Features in the Las Vegas Valley, Mauga and Kaseko, 2010

Star Quality Rating: 4 Stars   [View score details]
Rating Points Total: 115
Crash Modification Factor (CMF)
Value: Equation
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: Equation
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type: Angle,Fixed object,Head on,Rear end,Run off road,Sideswipe,Single vehicle
Crash Severity: O (property damage only)
Roadway Types: All
Number of Lanes:
Road Division Type: Divided by Median
Speed Limit: 30-45
Area Type: Urban
Traffic Volume: Minimum of 29320 to Maximum of 96080 Annual Average Daily Traffic (AADT)
Average Traffic Volume:
Time of Day: Not specified
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used: 2002 to 2006
State: NV
Type of Methodology Used: 7
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Aug-11-2010