CMF / CRF Details
CMF ID: 6403
Change clear zone width
Description: Change the width of the clear zone, widen or narrow
Prior Condition: No obstacles within 0 to 2 meters on one or both sides of the roadway
Category: Roadside
Study: Analyzing road design risk factors for run-off-road crashes in the Netherlands with crash prediction models, van Petegem and Wegman, 2014
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 90 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.49 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.19 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -49 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 19 |
| 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 |
