CMF / CRF Details

CMF ID: 2957

Convert major road of a signalized T intersection from two-way to one-way (motorcycle crashes)

Description: Convert the major road of a signalized T intersection from two-way to one-way (effect on motorcycle crashes)

Prior Condition: major road of T intersection has two-way operation

Category: Roadway

Study: Applying Bayesian Hierarchical Models to Examine Motorcycle Crashes at Signalized Intersections, Haque et al., 2010

 
Star Quality Rating: 3 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 0.4
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: 60   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: Not Specified
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type: Urban
Traffic Volume:
Average Traffic Volume:
Time of Day: All
If countermeasure is intersection-based
Intersection Type: Not specified
Intersection Geometry: 3-leg
Traffic Control: Signalized
Major Road Traffic Volume: Minimum of 4800 to Maximum of 30270 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume: Minimum of 2550 to Maximum of 25010 Annual Average Daily Traffic (AADT)
Average Major Road Volume : 15489 Annual Average Daily Traffic (AADT)
Average Minor Road Volume : 10447 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used: 2003 to 2006
Municipality:
State:
Country: Singapore
Type of Methodology Used: Regression cross-section
Sample Size (crashes): 400 crashes
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Mar-21-2011
Comments: Only motorcycle related crashes