CMF / CRF Details
CMF ID: 10760
Install Variable Speed Limit (VSL)
Description: Install Variable Speed Limit (VSL) system where posted speed limits change in real time according to traffic and/or weather conditions
Prior Condition: No Prior Condition(s)
Category: Advanced technology and ITS
Study: Safety Evaluation of Variable Speed Limit System in British Columbia, El Esawey et al., 2021
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 110 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.684 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.119 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 31.6 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 11.9 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | All |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 4 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | All |
| Minimum Speed Limit: | 90 |
| Maximum Speed Limit: | 110 |
| Speed Unit: | km/h |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 3672 to Maximum of 4255 Average Daily Traffic (ADT) |
| 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: | 2013 to 2019 |
| Municipality: | British Columbia |
| State: | notusa |
| Country: | Canada |
| Type of Methodology Used: | |
