CMF / CRF Details

CMF ID: 3865

Change travel lane plus sealed shoulder width from greater than or equal to 3.5m to less than 3.5m

Description: Change travel lane plus sealed shoulder width from greater than or equal to 3.5m to less than 3.5m

Prior Condition: road with travel lane plus sealed shoulder width greater than or equal to 3.5m

Category: Roadway

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

 
Star Quality Rating: 3 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 1.21
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: -21   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type: Run off road
Crash Severity: K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types: Not Specified
Number of Lanes:
Road Division Type: Undivided
Speed Limit: 100 km/h
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
State:
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
Comments: