CMF / CRF Details
CMF ID: 10240
Change from horizontal tangent to a sharp horizontal curve
Description:
Change horizontal tangent to a curve with a radius less than 1,500 ft
Prior Condition: Horizontal tangent
Category: Alignment
| Crash Modification Factor (CMF) |
|---|
| Value: | 4.92 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.88 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | -392 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 88 |
| Applicability |
|---|
| Crash Type: | Other |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| 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: | Undivided |
| Minimum Speed Limit: | 15 |
| Maximum Speed Limit: | 70 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 10 to Maximum of 57000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 3600 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 |
|---|
| Date Range of Data Used: | 2005 to 2015 |
| Municipality: | |
| State: | FL |
| Country: | USA |
| Type of Methodology Used: | Case-control |
| Sample Size (crashes): | 1704 crashes |
| Sample Size (miles): | 929 miles |
| Sample Size (mile-years): | 10219 mile-years |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 07, 2019 |
| Comments: | This CMF applies to single-vehicle motorcycle crashes on single or compound horizontal curves. A sharp horizontal curve has a radius less than 1,500 ft. |
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