CMF / CRF Details
Installing red light running (RLR) cameras for four-way signalized intersection
Countermeasure ID: 4365
Description: Installing red light running cameras only on the approaches with high potential for crashes
Prior Condition: No red light running cameras on any of the signalized intersection approaches
Category: Advanced technology and ITS
Study: Red Light Running Camera Assessment, Sperley Ross, 2011
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 5 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.774 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.49 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -77.4 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 49 |
| Applicability | |
|---|---|
| Crash Type: | Angle,Rear end,Sideswipe |
| Crash Severity: | B (minor injury),O (property damage only) |
| Roadway Types: | Major Collector |
| 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: | Undivided |
| Minimum Speed Limit: | 40 |
| Maximum Speed Limit: | 40 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 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: | 2004 to 2009 |
| Municipality: | Salem |
| State: | OR |
| Country: | USA |
| Type of Methodology Used: | Simple before/after |
| Sample Size (crashes): | 31 crashes before, 23 crashes after |
