CMF / CRF Details
CMF ID: 4118
Implement Barnes Dance
Description:
The Barnes Dance, also called a pedestrian scrammble, is a special phase added to the regular two-phase permissive signal timing, which stops vehicle traffic in all directions and allows pedestrians to cross in any fashion, including diagonally.
Prior Condition: Barnes Dance, also called pedestrian scramble, is a special phase added to the regular two-phase permissive signal timing, which stops vehicle traffic in all directions and allows pedestrians to cross in any fashion, including diagonally.
Category: Pedestrians
Crash Modification Factor (CMF) |
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Value: | 1.1 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | |
Crash Reduction Factor (CRF) |
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Value: | -10 (This value indicates an increase in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | |
Applicability |
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Crash Type: | Angle,Head on,Left turn,Rear end,Rear to rear,Right turn,Sideswipe |
Crash Severity: | All |
Roadway Types: | Not Specified |
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: | All |
Minimum Speed Limit: | |
Maximum Speed Limit: | |
Speed Unit: | |
Speed Limit Comment: | |
Area Type: | Urban |
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: | Signalized |
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: | 1998 to 2008 |
Municipality: | New York City |
State: | NY |
Country: | USA |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 336 crashes before, 150 crashes after |
Other Details |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Nov 01, 2012 |
Comments: | The corresponding change in crashes in the comparison group was a 12 percent reduction in multiple-vehicle crashes. This could be used to adjust the treatment effect to account for other factors not related to the treatment. |