CMF / CRF Details

CMF ID: 3247

Installation of bicycle lanes at signalized intersections

Description: Installation of bicycle lanes at signalized intersections

Prior Condition: No bicycle lanes, cyclists shared the roadway with motor vehicles

Category: Bicyclists

Study: Safety Performance Functions for Bicycle Crashes in New Zealand and Australia, Turner et al., 2011

 
Star Quality Rating: 2 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 0.8
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: 20   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type: Vehicle/bicycle
Crash Severity: All
Roadway Types: All
Number of Lanes:
Road Division Type: All
Speed Limit:
Area Type: Urban and suburban
Traffic Volume:
Average Traffic Volume:
Time of Day: All
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: 4-leg
Traffic Control: Signalized
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:
Municipality: Christchurch
State:
Country: New Zealand
Type of Methodology Used: Before/after using empirical Bayes or full Bayes
Sample Size (crashes): 30 crashes before, 23 crashes after
Sample Size (sites): 104 sites before, 104 sites after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jul-15-2011
Comments: