CMF / CRF Details
CMF ID: 4943
Safety effects of horizontal curves and tangents at type 1 crest vertical curves – tangents at type 1 crests
Description: Safety effects of horizontal curves and tangents at type 1 crest vertical curves – tangents at type 1 crests
Prior Condition: Level tangents
Category: Alignment
Study: Safety Effects of Horizontal Curve and Grade Combinations on Rural Two-Lane Highways, Bauer and Harwood, 2014
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 75 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 0 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | O (property damage only) |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 169 to Maximum of 26088 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 3105 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: | 2003 to 2008 |
| Municipality: | |
| State: | WA |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (mile-years): | 6198 mile-years |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 01, 2013 |
| Comments: | |
