CMF / CRF Details
CMF ID: 5252
Increase length of signal phases to allow pedestrians more crossing time
Description:
An increase in the length of signal phases on the main and/or cross streets so that pedestrians have more time crossing streets.
Prior Condition: Without increase in signal phase length
Category: Intersection traffic control
Crash Modification Factor (CMF) |
---|
Value: | 0.49 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.1 |
Crash Reduction Factor (CRF) |
---|
Value: | 51 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 10 |
Applicability |
---|
Crash Type: | Vehicle/pedestrian |
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: | |
Minimum Speed Limit: | |
Maximum Speed Limit: | |
Speed Unit: | |
Speed Limit Comment: | |
Area Type: | Urban |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | |
If countermeasure is intersection-based |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | No values chosen. |
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: | 1989 to 2008 |
Municipality: | New York City |
State: | NY |
Country: | |
Type of Methodology Used: | Other before/after |
Other Details |
---|
Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jan 01, 1970 |
Comments: | The number of crashes in the after period were not reported in this study, however, they have been recorded as 300 to give 10 points as a beneift of doubt for one or more of the following: (1) number of miles/sites in the reference/treatment group, (2) number of crashes in the references/treatment group, (3) reporting AADTs for the aggregate dataset but not for the disaggragate dataset used for CMF development. |