CMF / CRF Details

CMF ID: 10587

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:4 Stars  [View score details]
Rating Points Total:125
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:0.103
Crash Reduction Factor (CRF)
Value:13  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:10.3
Crash Type:Angle
Crash Severity:All
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
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):199 crashes before, 112 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.