CMF / CRF Details

CMF ID: 2721

Implement strict truck lane restrictions on 2-lane directional interstate segments (screened)

Description: Restrict trucks traveling 65 mph or less from the left lane of two-lane directional interstate segments

Prior Condition:  No truck lane restriction signs posted

Category: Roadway

Study: Evaluation of Truck Lane Restrictions in Virginia: Phase II, Fontaine et al., 2009

 
Star Quality Rating:1 Star  [View score details]
Rating Points Total:25
Crash Modification Factor (CMF)
Value:1.23
Adjusted Standard Error:
Unadjusted Standard Error:0.321
Crash Reduction Factor (CRF)
Value:-23  (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:32.1
Applicability
Crash Type:Truck related
Crash Severity:All
Roadway Types:Principal Arterial Interstate
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:
Minimum Speed Limit:65
Maximum Speed Limit:65
Speed Unit:mph
Speed Limit Comment:
Area Type:Not specified
Traffic Volume:Minimum of 3849 to Maximum of 9663 Annual Average Daily Traffic (AADT)
Average Traffic Volume:21475 Annual Average Daily Traffic (AADT)
Time of Day:Not specified
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:2001 to 2008
Municipality:
State:VA
Country:USA
Type of Methodology Used:Simple before/after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Mar 21, 2011
Comments: