CMF / CRF Details

CMF ID: 10872

Convert intersection to media U-turn (MUT) intersection


Prior Condition: Conventional Signalized Intersection

Category: Intersection geometry

Study: Safety Evaluation of Median U-Turn Crossover-Based Intersections, Al-Omari et al., 2020

Star Quality Rating: 5 Stars   [View score details]
Rating Points Total: 140
Crash Modification Factor (CMF)
Value: 0.1788
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: 82.12   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type: Other
Crash Severity: All
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: Divided by Median
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: 4-leg
Traffic Control: Signalized
Major Road Traffic Volume: Minimum of 19267 to Maximum of 72074 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume: Minimum of 1204 to Maximum of 58591 Annual Average Daily Traffic (AADT)
Average Major Road Volume : 49311 Annual Average Daily Traffic (AADT)
Average Minor Road Volume : 18625 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used: 2008 to 2017
State: MI, NC, OH
Type of Methodology Used:
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jul-01-2021
Comments: This CMF is for Head On Left Turn crashes. This CMF is for Type B MUT Intersection. A pictorial representation of Type A and Type B MUT Intersection is presented in Figure 2 in the paper.