CMF / CRF Details
CMF ID: 2703
Install transverse rumble strips on stop controlled approaches in rural areas
Description:
Prior Condition: No Prior Condition(s)
Category: Roadway
Study: Safety Evaluation of Transverse Rumble Strips on Approaches to Stop Controlled Intersections in Rural Areas, Srinivasan et al., 2010
Star Quality Rating: | [View score details] |
Rating Points Total: | 105 |
Crash Modification Factor (CMF) | |
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Value: | 1.138 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.121 |
Crash Reduction Factor (CRF) | |
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Value: | -13.8 (This value indicates an increase in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 12.1 |
Applicability | |
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Crash Type: | All |
Crash Severity: | O (property damage only) |
Roadway Types: | Major Collector |
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: | Undivided |
Minimum Speed Limit: | |
Maximum Speed Limit: | |
Speed Unit: | |
Speed Limit Comment: | |
Area Type: | |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | All |
If countermeasure is intersection-based | |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | 4-leg |
Traffic Control: | Stop-controlled |
Major Road Traffic Volume: | |
Minor Road Traffic Volume: | |
Average Major Road Volume : | 3265 Annual Average Daily Traffic (AADT) |
Average Minor Road Volume : | 801 Annual Average Daily Traffic (AADT) |
Development Details | |
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Date Range of Data Used: | 1987 to 2006 |
Municipality: | |
State: | IA,MN |
Country: | |
Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
Sample Size (crashes): | 2837 crashes before, 144 crashes after |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jan 01, 1970 |
Comments: |