CMF / CRF Details
CMF ID: 11531
Conversion of stop-controlled intersection to mini roundabout
Description:
Prior Condition: Two-way stop controlled (TWSC) intersection
Category: Intersection geometry
Study: Developing Crash Modification Factors for Mini-Roundabouts, Avelar et al., 2023
Star Quality Rating: | [View score details] |
Rating Points Total: | 100 |
Crash Modification Factor (CMF) | |
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Value: | 1.1552 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.2034 |
Crash Reduction Factor (CRF) | |
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Value: | -15.52 (This value indicates an increase in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 20.34 |
Applicability | |
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Crash Type: | Multiple vehicle |
Crash Severity: | All |
Roadway Types: | Not specified |
Street Type: | Two-Way |
Minimum Number of Lanes: | 1 |
Maximum Number of Lanes: | 3 |
Number of Lanes Direction: | One Direction |
Number of Lanes Comment: | |
Crash Weather: | All |
Road Division Type: | All |
Minimum Speed Limit: | 15 |
Maximum Speed Limit: | 55 |
Speed Unit: | mph |
Speed Limit Comment: | |
Area Type: | Urban and suburban |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | All |
If countermeasure is intersection-based | |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | No values chosen. |
Traffic Control: | Stop-controlled |
Major Road Traffic Volume: | Minimum of 643 to Maximum of 15138 Annual Average Daily Traffic (AADT) |
Minor Road Traffic Volume: | Minimum of 240 to Maximum of 10052 Annual Average Daily Traffic (AADT) |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | 2003 to 2019 |
Municipality: | |
State: | MD, MI, WA |
Country: | USA |
Type of Methodology Used: |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Sep 30, 2024 |
Comments: | CMF is presented in Table 27 in the report. |