CMF / CRF Details
CMF ID: 390
Prohibit left-turns with "No Left Turn" sign
Description:
Prior Condition: No Prior Condition(s)
Category: Intersection traffic control
Study: Guidelines for the Use of No U-Turn and No-Left Turn Signs, Brich and Cottrell, 1994
Star Quality Rating: | [View score details] |
Rating Points Total: | 70 |
Crash Modification Factor (CMF) | |
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Value: | 0.36 |
Adjusted Standard Error: | 0.15 |
Unadjusted Standard Error: | 0.07 |
Crash Reduction Factor (CRF) | |
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Value: | 64 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | 15 |
Unadjusted Standard Error: | 7 |
Applicability | |
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Crash Type: | Left turn |
Crash Severity: | All |
Roadway Types: | Minor Arterial |
Street Type: | |
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: | Urban and Suburban |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | |
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 19435 to Maximum of 42000 Average Daily Traffic (ADT) |
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: | |
Country: | |
Type of Methodology Used: | Simple before/after |