CMF / CRF Details
CMF ID: 6400
Change horizontal alignment
Description:
change horizontal alignment
Prior Condition: Roadway segment is straight section
Category: Alignment
| Crash Modification Factor (CMF) |
|---|
| Value: | 2.94 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 1.25 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | -194 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 125 |
| Applicability |
|---|
| Crash Type: | Run off road |
| Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
| 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: | 50 |
| Maximum Speed Limit: | 50 |
| Speed Unit: | mph |
| Speed Limit Comment: | 80 km/h converted to 50 km/h |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 0 to Maximum of 30000 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 |
|---|
| Date Range of Data Used: | 2004 to 2008 |
| Municipality: | Drenthe and Gelderland |
| State: | notusa |
| Country: | Netherlands |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 324 crashes |
| Sample Size (sites): | 7347 sites |
| Sample Size (site-years): | 36735 site-years |
| Sample Size (miles): | 457 miles |
| Sample Size (mile-years): | 2285 mile-years |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jun 22, 2015 |
| Comments: | This CMF applies to strong horizontal curves, compared to straight sections, which are not further defined. |
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