CMF / CRF Details
CMF ID: 6884
Install automated speed camera at signalized intersection
Description: Install an automated speed camera (photo radar) at a signalized intersection
Prior Condition: Signalized intersections with Red-light camera but without Intersection speed camera activated
Category: Advanced technology and ITS
Study: Safety Evaluation of Red Light Camera and Intersection Speed Camera Programs in Alberta, Izadpanah et al., 2015
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 130 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.09 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.036 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -9 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 3.6 |
| Applicability | |
|---|---|
| Crash Type: | Rear end |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban and suburban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 3-leg,4-leg |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1999 to 2012 |
| Municipality: | Alberta |
| State: | notusa |
| Country: | Canada |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 1392 crashes after |
| Sample Size (sites): | 46 sites before, 46 sites after |
