CMF / CRF Details

CMF ID: 8793

Install pedestrian countdown timer

Description: Install pedestrian countdown timer

Prior Condition: No PCS installed

Category: Intersection traffic control

Study: Developing Crash Modification Factors to Quantify Impacts of Pedestrian Countdown Signals to Drivers, Kitali et al., 2017

Star Quality Rating: 5 Stars   [View score details]
Rating Points Total: 140
Crash Modification Factor (CMF)
Value: 0.92
Adjusted Standard Error:
Unadjusted Standard Error: 0.016
Crash Reduction Factor (CRF)
Value: 8   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 1.6
Crash Type: Rear end
Crash Severity: All
Roadway Types: Not specified
Street Type:
Minimum Number of Lanes: 2
Maximum Number of Lanes: 6
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather: Not specified
Road Division Type:
Minimum Speed Limit: 30
Maximum Speed Limit: 55
Speed Unit: mph
Speed Limit Comment:
Area Type:
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: Minimum of 6033 to Maximum of 57458 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume: Minimum of 567 to Maximum of 36000 Annual Average Daily Traffic (AADT)
Average Major Road Volume : 28894 Annual Average Daily Traffic (AADT)
Average Minor Road Volume : 11428 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used: 2003 to 2014
Municipality: Jacksonville and Gainesville
State: FL
Country: USA
Type of Methodology Used: Before/after using empirical Bayes or full Bayes
Sample Size (crashes): 795 crashes before, 1110 crashes after
Sample Size (sites): 110 sites before, 110 sites after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Nov-17-2017