CMF / CRF Details
Install a traffic signal
Countermeasure ID: 325
Description:
Prior Condition: Stop controlled
Category: Intersection traffic control
Study: Accident Modification Factors for Traffic Engineering and ITS Improvements, Harkey et al., 2008
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 145 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.56 |
| Adjusted Standard Error: | 0.03 |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 44 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | 3 |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | All |
| 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: | Rural |
| 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: | Stop-controlled |
| Major Road Traffic Volume: | Minimum of 3261 to Maximum of 29926 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 101 to Maximum of 10300 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | |
| Municipality: | |
| State: | |
| Country: | |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
