CMF / CRF Details
CMF ID: 9040
Install transverse rumble strips on stop controlled approaches in rural areas
Description:
Prior Condition: No transverse rumble strips
Category: Roadway
Study: Advancing Innovating Intersection Safety Treatments for Two-Lane Rural Highways, Torbic et al., 2015
Star Quality Rating: | [View score details] |
Rating Points Total: | 80 |
Crash Modification Factor (CMF) | |
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Value: | 0.94 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.37 |
Crash Reduction Factor (CRF) | |
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Value: | 6 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 37 |
Applicability | |
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Crash Type: | Rear end |
Crash Severity: | O (property damage only) |
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: | |
Maximum Speed Limit: | |
Speed Unit: | |
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: | 3-leg |
Traffic Control: | Stop-controlled |
Major Road Traffic Volume: | Minimum of 245 to Maximum of 11700 Annual Average Daily Traffic (AADT) |
Minor Road Traffic Volume: | Minimum of 110 to Maximum of 7000 Annual Average Daily Traffic (AADT) |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | |
Municipality: | |
State: | MO,ND,OR |
Country: | |
Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
Sample Size (crashes): | 2 crashes before, 7 crashes after |
Sample Size (sites): | 25 sites before, 25 sites after |
Sample Size (site-years): | 123 site-years before, 92 site-years after |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jan 17, 2018 |
Comments: |