CMF / CRF Details
CMF ID: 7227
Change horizontal alignment
Description:
change horizontal alignment
Prior Condition: horizontal tangent
Category: Alignment
| Crash Modification Factor (CMF) |
|---|
| Value: | 1.518 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.404 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | -51.83 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 40.39 |
| Applicability |
|---|
| Crash Type: | Fixed object |
| Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | Principal Arterial Other Freeways and Expressways |
| Street Type: | |
| Minimum Number of Lanes: | 6 |
| Maximum Number of Lanes: | 6 |
| 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: | Rural |
| Traffic Volume: | |
| 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 |
|---|
| Date Range of Data Used: | 2000 to 2007 |
| Municipality: | |
| State: | CA,MO,NC,OH,PA,WA |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 01, 2015 |
| Comments: | This CMF applies to the presence of a horizontal curve versus a tangent for fixed-object crashes on six-lane freeways with a flexible barrier. |
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