CMF / CRF Details
CMF ID: 4768
Install wider markings with resurfacing
Description: Resurface to improve rideability and install wider pavement markings (increase from 4 inch to 6 inch).
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: | [View score details] |
Rating Points Total: | 120 |
Crash Modification Factor (CMF) | |
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Value: | 0.91 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.037 |
Crash Reduction Factor (CRF) | |
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Value: | 9 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 3.7 |
Applicability | |
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Crash Type: | All |
Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
Roadway Types: | Principal Arterial Other Freeways and Expressways |
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: | 13751 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 | |
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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): | 749 crashes before, 656 crashes after |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | May 01, 2013 |
Comments: |