CMF / CRF Details

CMF ID: 7275

Implement transit signal and lane priority (at transit-serviced locations)

Description: Implement transit signal and lane priority (at transit-serviced locations)

Prior Condition:  No priority measures

Category: Transit

Study: Road Safety Impacts of Tram/Streetcar Priority Measures - A Before-After Study Using Empirical Bayes Method, Naznin et al., 2015

 
Star Quality Rating:4 Stars  [View score details]
Rating Points Total:120
Crash Modification Factor (CMF)
Value:0.836
Adjusted Standard Error:
Unadjusted Standard Error:0.061
Crash Reduction Factor (CRF)
Value:16.4  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:6.1
Applicability
Crash Type:All
Crash Severity:All
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:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:
Traffic Volume:
Average Traffic Volume:
Time of Day:Not specified
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:Not specified
Traffic Control:Signalized
Major Road Traffic Volume:Minimum of 3000 to Maximum of 33000 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:2000 to 2013
Municipality:
State:notusa
Country:Australia
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):690 crashes before, 226 crashes after
Sample Size (sites):52 sites before
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Nov 01, 2015
Comments: