CMF / CRF Details
CMF ID: 8063
Install centerline rumble strips
Description:
Prior Condition: Roadway without centerline rumble strips
Category: Roadway
Study: Evaluation of Non-freeway Rumble Strips-Phase II, Datta et al., 2015
Star Quality Rating: | [View score details] |
Rating Points Total: | 10 |
Crash Modification Factor (CMF) | |
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Value: | 1.375 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.452 |
Crash Reduction Factor (CRF) | |
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Value: | -37.5 (This value indicates an increase in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 45.2 |
Applicability | |
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Crash Type: | Other |
Crash Severity: | All |
Roadway Types: | Principal Arterial Other |
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: | |
Minimum Speed Limit: | 55 |
Maximum Speed Limit: | 55 |
Speed Unit: | mph |
Speed Limit Comment: | |
Area Type: | Rural |
Traffic Volume: | |
Average Traffic Volume: | 4683 Annual Average Daily Traffic (AADT) |
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: | 2005 to 2013 |
Municipality: | |
State: | MI |
Country: | |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 16 crashes before, 22 crashes after |
Sample Size (miles): | 4214 miles before, 4214 miles after |
Sample Size (miles): | 12642 mile-years before, 12642 mile-years after |