CMF / CRF Details

CMF ID: 1516

Create directional median openings to allow left-turns and u-turns

Description:

Prior Condition:  No Prior Condition(s)

Category: Access management

Study: Signalized Intersections: Informational Guide, Rodegerdts et al., 2004

 
Star Quality Rating:1 Star  [View score details]
Rating Points Total:10
Crash Modification Factor (CMF)
Value:0.49
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value:51  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type:All
Crash Severity:All
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:
Maximum Number of Lanes:
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:
Traffic Volume:
Average Traffic Volume:
Time of Day:
If countermeasure is intersection-based
Intersection Type:Other
Intersection Geometry:
Traffic Control:Uncontrolled
Major Road Traffic Volume:Minimum of 14319 to Maximum of 28154
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:
Municipality:
State:MI
Country:
Type of Methodology Used:Non-regression cross-section
Sample Size (sites):51 sites
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Dec 01, 2009
Comments: