CMF / CRF Details

CMF ID: 9823

Install right-in-right-out (RIRO) operations at stop-controlled intersections

Description:

Prior Condition:  No Prior Condition(s)

Category: Access management

Study: Safety Effects of Turning Movement Restrictions at Stop-Controlled Intersections, Le et al., 2018

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:95
Crash Modification Factor (CMF)
Value:0.2
Adjusted Standard Error:
Unadjusted Standard Error:0.07
Crash Reduction Factor (CRF)
Value:80  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:7
Applicability
Crash Type:Other
Crash Severity:K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:4
Maximum Number of Lanes:6
Number of Lanes Direction:
Number of Lanes Comment:4 and 6 Lanes
Crash Weather:Not specified
Road Division Type:Divided by Median
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Urban
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
Traffic Control:Stop-controlled
Major Road Traffic Volume:Minimum of 13433 to Maximum of 75000 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume:Minimum of 51 to Maximum of 2600 Annual Average Daily Traffic (AADT)
Average Major Road Volume :38724 Annual Average Daily Traffic (AADT)
Average Minor Road Volume :519 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used:
Municipality:
State:CA
Country:USA
Type of Methodology Used:Regression cross-section
Sample Size (crashes):101 crashes
Sample Size (sites):138 sites
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Oct 27, 2018
Comments:This CMF compares urban, three-legged, stop-controlled intersections with RIRO operation to full movement. This CMF looks at Fatal and Injury, Intersection-related crashes. Intersection-related crashes are defined as all crashes within 100 ft of intersection defined as 'intersection-related' by the reporting officer (K, A, B, and C injuries on KABCO scale)

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