CMF / CRF Details

CMF ID: 10586

Install a pedestrian hybrid beacon (PHB or HAWK)


Prior Condition: No Prior Condition(s)

Category: Pedestrians

Study: Evaluation of Pedestrian Hybrid Beacons on Arizona Highways, Fitzpatrick et al., 2019

Star Quality Rating: 5 Stars   [View score details]
Rating Points Total: 147
Crash Modification Factor (CMF)
Value: 0.808
Adjusted Standard Error:
Unadjusted Standard Error: 0.067
Crash Reduction Factor (CRF)
Value: 19.2   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 6.7
Crash Type: All
Crash Severity: K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types: All
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: Urban and suburban
Traffic Volume:
Average Traffic Volume:
Time of Day: All
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: 3-leg,4-leg,Not specified
Traffic Control: Not specified
Major Road Traffic Volume: Minimum of 5400 to Maximum of 47627 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume:
Average Major Road Volume : 23959 Annual Average Daily Traffic (AADT)
Average Minor Road Volume :
Development Details
Date Range of Data Used: 2007 to 2017
State: AZ
Type of Methodology Used: Before/after using empirical Bayes or full Bayes
Sample Size (crashes): 408 crashes before, 230 crashes after
Sample Size (sites): 52 sites before, 52 sites after
Sample Size (site-years): 342.33 site-years before, 225.33 site-years after
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Dec-17-2020
Comments: The reference group consisted of 101 unsignalized intersections.