CMF / CRF Details
Convert intersection to roundabout
Countermeasure ID: 11579
Description:
Prior Condition: Conventional stop-controlled and/or signalized intersection
Category: Intersection geometry
Study: Traffic Safety Evaluation of Pedestrians and Bicyclists at Roundabouts in Minnesota, Wagner et al., 2023
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.601 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) |
|---|
| Value: | 39.9 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability |
|---|
| Crash Type: | All |
| Crash Severity: | K (fatal), A (serious injury), B (minor injury), C (possible injury) |
| Roadway Types: | Not specified |
| Street Type: | Two-Way |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | All |
| Road Division Type: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | All |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 3-leg, 4-leg, More than 4 legs |
| Traffic Control: | |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details |
|---|
| Date Range of Data Used: | 2015 to 2019 |
| Municipality: | |
| State: | MN |
| Country: | USA |
| Type of Methodology Used: | |
| Other Details |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Sep 23, 2024 |
| Comments: | CMF is presented in Table 3.7 in the report. |
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