CMF / CRF Details
CMF ID: 11175
Conversion of intersection to roundabout
Description: Conversion of stop- and signal-controlled intersections into roundabouts
Prior Condition: traditional intersection
Category: Intersection geometry
Study: Safety and Economic Evaluation of the Highway Safety Improvement Program: Is there a Return on Investment?, Boris Claros, Erynn Schroeder, Kentin Brummett, Madhav Chitturi, Andrea Bill, and David A. Noyce, 2022
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 55 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.307 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -30.7 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | O (property damage only) |
| Roadway Types: | Not specified |
| Street Type: | Not Specified |
| 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: | Not specified |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| If countermeasure is intersection-based | |
| Intersection Type: | Not specified |
| Intersection Geometry: | Not specified |
| Traffic Control: | Not specified |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
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| Date Range of Data Used: | |
| Municipality: | |
| State: | WI |
| Country: | |
| Type of Methodology Used: | |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 25, 2022 |
| Comments: | |
