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: