CMF / CRF Details

CMF ID: 7273

Install transit signal priority (TSP) technology (at transit-serviced locations)


Prior Condition: Without transit signal 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: 100
Crash Modification Factor (CMF)
Value: 0.861
Adjusted Standard Error:
Unadjusted Standard Error: 0.082
Crash Reduction Factor (CRF)
Value: 13.9   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 8.2
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: Roadway/roadway (not interchange related)
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
Country: Australia
Type of Methodology Used: 2
Sample Size (crashes): 385 crashes before, 125 crashes after
Sample Size (sites): 29 sites before
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Nov-01-2015