CMF / CRF Details
CMF ID: 5442
Install cable median barrier
Description:
Install cable median barrier
Prior Condition: No Cable Median Barrier
Category: Roadside
Crash Modification Factor (CMF) |
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Value: | 1.91 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.0622 |
Crash Reduction Factor (CRF) |
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Value: | -91 (This value indicates an increase in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 6.22 |
Applicability |
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Crash Type: | All |
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): | 1372 crashes before, 2962 crashes after |
Other Details |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Apr 30, 2014 |
Comments: | CMF for all median related crashes; Cable median barrier includes generic cable median, 3-strand high-tension cable, and 4-strand high-tension cable |