CMF / CRF Details
CMF ID: 5448
Install cable median barrier
Description: Install cable median barrier
Prior Condition: No Cable Median Barrier
Category: Roadside
Study: Cable Median Barrier Program in Washington State, Olson et al. 2013, 2013
Star Quality Rating: | [View score details] |
Rating Points Total: | 60 |
Crash Modification Factor (CMF) | |
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Value: | 0.47 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.033 |
Crash Reduction Factor (CRF) | |
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Value: | 53 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 3.3 |
Applicability | |
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Crash Type: | Other |
Crash Severity: | All |
Roadway Types: | Principal Arterial Other Freeways and Expressways |
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: | Not specified |
Traffic Volume: | Minimum of 10000 to Maximum of 180000 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: | 1995 to 2011 |
Municipality: | |
State: | WA |
Country: | USA |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 571 crashes before, 305 crashes after |