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]
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
Number of Lanes:
Road Division Type:
Speed Limit:
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:
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: