CMF / CRF Details
CMF ID: 3133
Convert two-way (with flashing beacons) to all-way stop control (with flashing beacons)
Description: Convert from two-way stop sign control with flashing beacons to all-way stop sign control with flashing beacons.
Prior Condition: Two-way stop sign control with flashing beacons.
Category: Intersection traffic control
Study: Evaluation of the Conversion from Two-Way Stop Sign Control to All-Way Stop Sign Control at 53 Locations in North Carolina, Simpson and Hummer, 2010
Star Quality Rating: | [View score details] |
Rating Points Total: | 85 |
Crash Modification Factor (CMF) | |
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Value: | 0.198 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.039 |
Crash Reduction Factor (CRF) | |
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Value: | 80.2 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 3.9 |
Applicability | |
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Crash Type: | All |
Crash Severity: | All |
Roadway Types: | All |
Street Type: | |
Minimum Number of Lanes: | 1 |
Maximum Number of Lanes: | 1 |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
Crash Weather: | Not specified |
Road Division Type: | Undivided |
Minimum Speed Limit: | 35 |
Maximum Speed Limit: | 55 |
Speed Unit: | mph |
Speed Limit Comment: | |
Area Type: | All |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | Not specified |
If countermeasure is intersection-based | |
Intersection Type: | |
Intersection Geometry: | 4-leg |
Traffic Control: | Stop-controlled |
Major Road Traffic Volume: | Minimum of 3550 to Maximum of 13650 |
Minor Road Traffic Volume: | Minimum of 3550 to Maximum of 13650 |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | 1990 to 2009 |
Municipality: | |
State: | NC |
Country: | |
Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jul 15, 2011 |
Comments: |