CMF / CRF Details
CMF ID: 2938
Installation of channelizing separator islands on side road approaches with supplemental STOP signs
Description: Installation of channelizing separator islands on side road approaches with supplemental STOP signs
Prior Condition: Minor-road approach at rural intersections with two-lane, two-way roadways with two-way STOP-control
Category: Intersection traffic control
Study: Two Low Cost Safety Concepts for Two Way Stop Controlled, Rural Intersections on High Speed Two Lane, Two Way Roadways, Hughes et al., 2010
Star Quality Rating: | [View score details] |
Rating Points Total: | 10 |
Crash Modification Factor (CMF) | |
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Value: | 0.26 |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Crash Reduction Factor (CRF) | |
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Value: | 74 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Applicability | |
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Crash Type: | Angle |
Crash Severity: | All |
Roadway Types: | Not Specified |
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: | |
Maximum Speed Limit: | |
Speed Unit: | |
Speed Limit Comment: | |
Area Type: | Rural |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | All |
If countermeasure is intersection-based | |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | 4-leg |
Traffic Control: | Stop-controlled |
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: | VA |
Country: | |
Type of Methodology Used: | Simple before/after |
Sample Size (site-years): | 4 site-years before, 2 site-years after |