CMF / CRF Details

CMF ID: 7274

Implement transit lane priority (at transit-serviced locations)

Description: Implement lane priority measures for trams at transit locations

Prior Condition: Without lane priority

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: 3 Stars   [View score details]
Rating Points Total: 105
Crash Modification Factor (CMF)
Value: 0.806
Adjusted Standard Error:
Unadjusted Standard Error: 0.091
Crash Reduction Factor (CRF)
Value: 19.4   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 9.1
Crash Type: All
Crash Severity: All
Roadway Types: Not specified
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type:
Traffic Volume: Minimum of 4600 to Maximum of 30000 Annual Average Daily Traffic (AADT)
Average Traffic Volume:
Time of Day: Not specified
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: 2000 to 2013
Country: Australia
Type of Methodology Used: 2
Sample Size (crashes): 315 crashes before, 101 crashes after
Sample Size (sites): 23 sites before
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Nov-01-2015