CMF / CRF Details

CMF ID: 2376

Provide intersection illumination

Description:

Prior Condition:  Rural 2-lane intersection with no lighting.

Category: Highway lighting

Study: A Simultaneous Equations Model of Crash Frequency By Collision Type for Rural Intersections, Ye et al., 2008

 
Star Quality Rating:4 Stars  [View score details]
Rating Points Total:110
Crash Modification Factor (CMF)
Value:0.67
Adjusted Standard Error:0.12
Unadjusted Standard Error:0.12
Crash Reduction Factor (CRF)
Value:32.6  (This value indicates a decrease in crashes)
Adjusted Standard Error:12.1
Unadjusted Standard Error:12.1
Applicability
Crash Type:Angle
Crash Severity:All
Roadway Types:Not Specified
Street Type:
Minimum Number of Lanes:2
Maximum Number of Lanes:2
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:Undivided
Minimum Speed Limit:25
Maximum Speed Limit:55
Speed Unit:mph
Speed Limit Comment:
Area Type:Rural
Traffic Volume:
Average Traffic Volume:
Time of Day:All
If countermeasure is intersection-based
Intersection Type:Roadway/roadway (not interchange related)
Intersection Geometry:
Traffic Control:Not specified
Major Road Traffic Volume:Minimum of 420 to Maximum of 15200
Minor Road Traffic Volume:Minimum of 80 to Maximum of 10400
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:1996 to 1997
Municipality:38 Counties
State:GA
Country:
Type of Methodology Used:Regression cross-section
Sample Size (site-years):330 site-years
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Jan 01, 1970
Comments:Countermeasure name has been slightly modified for consistency across Clearinghouse