CMF / CRF Details

CMF ID: 4115

Increase cycle length for pedestrian crossing

Description: Increase the total cycle length to lengthen pedestrian crossing time.

Prior Condition:  The cycle lengths of many of the intersections on Queens Boulevard (a 12-lane thoroughfare) and Ocean Parkway (has a central 7-lane roadway, two service roads, and two medians with trees) were increased as a traffic safety countermeasure: from 120-second to 150-second on Queens Boulevard, allowing an additional 20-second walk time for pedestrians crossing the very wide main street, and from 90 to 120 seconds on Ocean Parkway, allowing an increase in pedestrian crossing time from 6 to 17 seconds.

Category: Pedestrians

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:2 Stars  [View score details]
Rating Points Total:65
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value:50  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type:Vehicle/pedestrian
Crash Severity:All
Roadway Types:Not Specified
Street Type:
Minimum Number of Lanes:6
Maximum Number of Lanes:6
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
Date Range of Data Used:1998 to 2008
Municipality:New York City
Type of Methodology Used:Simple before/after
Sample Size (crashes):155 crashes before, 31 crashes after
Other Details
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 4 percent reduction in pedestrian-vehicle crashes. This could be used to adjust the treatment effect to account for other factors not related to the treatment.