CMF / CRF Details
Change driveway class to high turnover/major
Countermeasure ID: 8205
Description: Driveway class consists of turnover rate. Single dwelling units have a lower turnover rate and big box retail has a high rate.
Prior Condition: Lower driveway class (i.e., single dwelling unit, subdivision/apts, low turnover small business)
Category: Access management
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 85 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 2.17 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.2 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -117 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 20 |
| Applicability | |
|---|---|
| Crash Type: | Other |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| 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: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| 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: | 2012 to 2012 |
| Municipality: | |
| State: | SC |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (sites): | 3774 sites |
| Sample Size (site-years): | 3774 site-years |
