CMF / CRF Details

CMF ID: 315

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

Description:

Prior Condition: No Prior Condition(s)

Category: Intersection traffic control

Study: Prediction of the Expected Safety Performance of Rural Two-Lane Highways, Harwood et al., 2000

 
Star Quality Rating: 5 Stars
Crash Modification Factor (CMF)
Value: 0.52
Adjusted Standard Error: 0.04
Unadjusted Standard Error: 0.02
Crash Reduction Factor (CRF)
Value: 48   (This value indicates a decrease in crashes)
Adjusted Standard Error: 4
Unadjusted Standard Error: 2
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: Not Specified
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type: Rural
Traffic Volume:
Average Traffic Volume:
Time of Day:
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: Not Specified
Traffic Control: Stop-controlled
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:
Country:
Type of Methodology Used: Simple before/after
Other Details
Included in Highway Safety Manual? Yes. HSM lists this CMF in bold font to indicate that it has the highest reliability since it has an adjusted standard error of 0.1 or less.
Date Added to Clearinghouse: Dec-01-2009
Comments: Countermeasure name changed to match HSM