CMF / CRF Details

CMF ID: 9125

Install enhanced RRFB pedestrian crossing at mid-block crossing location

Description: Mid-block pedestrian crossings enhanced with Rectangular Rapid Flashing Beacon (RRFB)

Prior Condition:  Previously unmarked or at a location with prior high-visibility markings. The data set pooled these locations in the estimation of CMFs.

Category: Pedestrians

Study: Safety Effectiveness of Pedestrian Crossing Enhancements, Monsere et al.,, 2017

Star Quality Rating:2 Stars  [View score details]
Rating Points Total:65
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:0.22
Crash Reduction Factor (CRF)
Value:7  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:22
Crash Type:Rear end
Crash Severity:All
Roadway Types:All
Street Type:
Minimum Number of Lanes:2
Maximum Number of Lanes:5
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:Undivided
Minimum Speed Limit:20
Maximum Speed Limit:45
Speed Unit:mph
Speed Limit Comment:
Area Type:All
Traffic Volume:
Average Traffic Volume:13000 Annual Average Daily Traffic (AADT)
Time of Day:All
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:2010 to 2014
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):18 crashes before, 26 crashes after
Sample Size (sites):15 sites before, 15 sites after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Jan 17, 2018
Comments:all rear-end crashes, not just pedestrian related crashes.