CMF / CRF Details
CMF ID: 10363
Install pedestrian countdown timer
Description: Install pedestrian countdown timer
Prior Condition: Intersections without countdown times (but with pedestrian signals)
Category: Intersection traffic control
Study: A Justification for Pedestrian Countdown Signals at Signalized Intersections: The Safety Impact on Senior Motorists, Boateng et al., 2019
Star Quality Rating: | [View score details] |
Rating Points Total: | 80 |
Crash Modification Factor (CMF) | |
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Value: | 0.99 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.03 |
Crash Reduction Factor (CRF) | |
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Value: | 1 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 3 |
Applicability | |
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Crash Type: | All |
Crash Severity: | All |
Roadway Types: | All |
Street Type: | |
Minimum Number of Lanes: | 1 |
Maximum Number of Lanes: | 10 |
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: | Not specified |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | All |
If countermeasure is intersection-based | |
Intersection Type: | Not specified |
Intersection Geometry: | Not specified |
Traffic Control: | Signalized |
Major Road Traffic Volume: | Minimum of 1637 to Maximum of 70100 Annual Average Daily Traffic (AADT) |
Minor Road Traffic Volume: | Minimum of 730 to Maximum of 35214 Annual Average Daily Traffic (AADT) |
Average Major Road Volume : | 14072 Annual Average Daily Traffic (AADT) |
Average Minor Road Volume : | 7348 Annual Average Daily Traffic (AADT) |
Development Details | |
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Date Range of Data Used: | 2004 to 2016 |
Municipality: | |
State: | MI |
Country: | |
Type of Methodology Used: | Before/after using comparison group |
Sample Size (crashes): | 5339 crashes before, 4656 crashes after |
Sample Size (sites): | 93 sites before, 93 sites after |
Sample Size (site-years): | 465 site-years before, 465 site-years after |