CMF / CRF Details

CMF ID: 9927

Install a traffic signal


Prior Condition:  Two- way stop-controlled

Category: Intersection traffic control

Study: Effects of Signalization at Rural Intersections Considering the Elderly Driving Population, Yue et al., 2019

Star Quality Rating:3 Stars  [View score details]
Rating Points Total:105
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type:All
Crash Severity:K (fatal),A (serious injury),B (minor injury)
Roadway Types:Not specified
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:Rural
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:Other
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :4674 Annual Average Daily Traffic (AADT)
Average Minor Road Volume :1972 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used:2011 to 2014
Type of Methodology Used:Regression cross-section
Sample Size (sites):112 sites
Sample Size (site-years):448 site-years
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Jul 26, 2019
Comments:This CMF is for crashes not involving elderly drivers.