CMF / CRF Details
CMF ID: 6855
Change horizontal alignment
Description: change horizontal alignment
Prior Condition: Roadway without horizontal curves
Category: Alignment
Study: Is Horizontal Curvature a Significant Factor of Safety in Rural Multilane Highways?, Banihashemi, 2015
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 75 |
| Crash Modification Factor (CMF) | |
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| Value: |  |
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| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
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| Value: | |
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| Applicability | |
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| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | All |
| 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: | All |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
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| Intersection Geometry: | |
| Traffic Control: | |
| Major Road Traffic Volume: | |
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| Average Minor Road Volume : | |
| Development Details | |
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| Date Range of Data Used: | 2007 to 2009 |
| Municipality: | |
| State: | WA |
| Country: | |
| Type of Methodology Used: | Non-regression cross-section |
| Sample Size (sites): | 3017 sites |
| Sample Size (site-years): | 9051 site-years |
| Sample Size (miles): | 212 miles |
| Sample Size (mile-years): | 636 mile-years |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 01, 2015 |
| Comments: | CMFunction for horizontal curves. CMF=1 for curve radius >=4240ft |
