CMF / CRF Details

CMF ID: 3127

Convert minor-road stop control to all-way stop control

Description:

Prior Condition: Two-way stop sign control with and without flashing beacons.

Category: Intersection traffic control

Study: Evaluation of the Conversion from Two-Way Stop Sign Control to All-Way Stop Sign Control at 53 Locations in North Carolina, Simpson and Hummer, 2010

 
Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 95
Crash Modification Factor (CMF)
Value: 0.319
Adjusted Standard Error:
Unadjusted Standard Error: 0.022
Crash Reduction Factor (CRF)
Value: 68.1   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 2.2
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: All
Number of Lanes: 1
Road Division Type: All
Speed Limit: 25-55
Area Type: All
Traffic Volume:
Average Traffic Volume:
Time of Day: Not specified
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry: 4-leg
Traffic Control: Stop-controlled
Major Road Traffic Volume: Minimum of 680 to Maximum of 15400
Minor Road Traffic Volume: Minimum of 680 to Maximum of 15400
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used: 1990 to 2009
Municipality:
State: NC
Country:
Type of Methodology Used: 2
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jul-15-2011
Comments: Countermeasure name has been slightly modified for consistency across Clearinghouse