CMF / CRF Details

CMF ID: 9925

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: 4 Stars   [View score details]
Rating Points Total: 130
Crash Modification Factor (CMF)
Value: Equation
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type: All
Crash Severity: O (property damage only)
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
State: FL
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.