CMF / CRF Details

CMF ID: 3864

Change grade from positive or zero to negative

Description: Change grade from positive or zero to negative

Prior Condition: road with positive or zero grade

Category: Alignment

Study: Effect of Clear Zone Widths on Run-off-road Crash Outcomes, Jurewicz and Pyta, 2010

Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 90
Crash Modification Factor (CMF)
Value: 1.3
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: -30   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type: Run off road
Crash Severity: K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types: Not Specified
Street Type:
Minimum Number of Lanes:
Maximum Number of Lanes:
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather: Not specified
Road Division Type: Undivided
Minimum Speed Limit: 100
Maximum Speed Limit: 100
Speed Unit: km/h
Speed Limit Comment:
Area Type: Rural
Traffic Volume: Minimum of 1200 to Maximum of 2400 Annual Average Daily Traffic (AADT)
Average Traffic Volume:
Time of Day: All
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: 2003 to 2007
Municipality: Victoria
Country: Australia
Type of Methodology Used: Regression cross-section
Sample Size (crashes): 217 crashes
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jun-04-2012