CMF / CRF Details
CMF ID: 4122
Install a traffic signal
Description:
Prior Condition: Unsignalized intersection
Category: Intersection traffic control
Study: The Relative Effectiveness of Pedestrian Safety Countermeasures at Urban Intersections - Lessons from a New York City Experience, Li Chen, Cynthia Chen, and Reid Ewing, 2012
Star Quality Rating: | [View score details] |
Rating Points Total: | 65 |
Crash Modification Factor (CMF) | |
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Value: | 0.51 |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Crash Reduction Factor (CRF) | |
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Value: | 49 (This value indicates a decrease 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): | 2936 crashes before, 509 crashes after |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Nov 01, 2012 |
Comments: | Countermeasure name has been slightly modified for consistency across Clearinghouse |