CMF / CRF Details
CMF ID: 6103
Install shoulder rumble strips
Description:
Prior Condition: No Rumble Strips on Shoulder
Category: Shoulder treatments
Study: Effectiveness of various safety improvements in reducing crashes on Wyoming roadways, Zebulon C. Coulter Khaled Ksaibati, 2013
Star Quality Rating: | [View score details] |
Rating Points Total: | 40 |
Crash Modification Factor (CMF) | |
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Value: | 1.2 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.1 |
Crash Reduction Factor (CRF) | |
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Value: | -20 (This value indicates an increase in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 10 |
Applicability | |
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Crash Type: | Run off road |
Crash Severity: | O (property damage only) |
Roadway Types: | Principal Arterial Interstate |
Street Type: | |
Minimum Number of Lanes: | |
Maximum Number of Lanes: | |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
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: | Minimum of 7000 to Maximum of 13,500 Annual Average Daily Traffic (AADT) |
Average Traffic Volume: | |
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: | 2000 to 2010 |
Municipality: | |
State: | WY |
Country: | USA |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 277 crashes before, 333 crashes after |
Sample Size (sites): | 34 sites before, 34 sites after |
Sample Size (site-years): | 170 site-years before, 170 site-years after |
Sample Size (miles): | 224 miles before, 224 miles after |
Sample Size (miles): | 2237 mile-years before, 2237 mile-years after |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Mar 11, 2015 |
Comments: |