CMF / CRF Details
Install a traffic signal
Countermeasure ID: 5532
Description:
Prior Condition: Stop controlled intersection
Category: Intersection traffic control
Study: Comparison of Safety Evaluation Approaches for Intersection Signalization in Florida, Wang and Abdel-Aty, 2014
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.791 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.115 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | 20.9 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 11.5 |
| Applicability |
|---|
| Crash Type: | All |
| 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: | 4 |
| 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: | Not specified |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| 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 25000 to Maximum of 35000 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details |
|---|
| Date Range of Data Used: | 2004 to 2009 |
| Municipality: | |
| State: | FL |
| Country: | |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 12, 2014 |
| Comments: | CMF applies to intersections with major road AADT 25,000-35,000 |
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