CMF / CRF Details

CMF ID: 4786

Install wider markings and shoulder rumble strips with resurfacing

Description: Resurface roadway to improve rideability and install wider pavement markings (increase from 4 inch to 6 inch) and shoulder rumble strips.

Prior Condition:  No Prior Condition(s)

Category: Delineation

Study: Benefit/Cost Evaluation of MoDOT's Total Striping and Delineation Program: Phase II, Potts et al., 2011

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:105
Crash Modification Factor (CMF)
Value:0.51
Adjusted Standard Error:
Unadjusted Standard Error:0.183
Crash Reduction Factor (CRF)
Value:49  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:18.3
Applicability
Crash Type:All
Crash Severity:K (fatal),A (serious injury)
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:3
Maximum Number of Lanes:
Number of Lanes Direction:Both Directions
Number of Lanes Comment:Multi Lane
Crash Weather:Not specified
Road Division Type:Divided by Median
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Rural
Traffic Volume:
Average Traffic Volume:7500 Average Daily Traffic (ADT)
Time of Day:All
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:2002 to 2009
Municipality:
State:MO
Country:
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):11 crashes before, 8 crashes after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:May 01, 2013
Comments: