CMF / CRF Details

CMF ID: 10732

Install bicycle lanes

Description:

Prior Condition:  No Bicycle Lane

Category: Bicyclists

Study: Development of Crash Modification Factors for Bicycle Lane Additions While Reducing Lane and Shoulder Widths, , 2021

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:80
Crash Modification Factor (CMF)
Value:0.8851
Adjusted Standard Error:
Unadjusted Standard Error:0.2697
Crash Reduction Factor (CRF)
Value:11.49  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:26.97
Applicability
Crash Type:All
Crash Severity:O (property damage only)
Roadway Types:All
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:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Urban
Traffic Volume:Minimum of 1000 to Maximum of 160504 Annual Average Daily Traffic (AADT)
Average Traffic Volume:22895 Annual Average Daily Traffic (AADT)
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:2010 to 2013
Municipality:
State:WA
Country:
Type of Methodology Used:Regression cross-section
Sample Size (sites):87 sites
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Feb 25, 2021
Comments:This CMF is for bicycle lane addition regardless of change in average daily bicycle traffic (ADBT). The base condition was two lanes, no median, and urban arterial road.