CMF / CRF Details

CMF ID: 9824

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]
Crash Modification Factor (CMF)
Value: 1.1
Adjusted Standard Error:
Unadjusted Standard Error: 0.2
Crash Reduction Factor (CRF)
Value: -10   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 20
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: Not specified
Number of Lanes: 4 and 6
Road Division Type: Divided by Median
Speed Limit:
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: 4-leg
Traffic Control: Signalized
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:
Municipality:
State: CA
Country: USA
Type of Methodology Used: Regression cross-section
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Oct-27-2018
Comments: This CMF represents the difference in crashes at signalized intersections downstream from RIRO intersections compared to signalized intersections downstream from full movement intersections.This CMF looks at Total crashes. Total crashes are defined as all crashes within 100 ft of intersection (all types and severities combined)