CMF / CRF Details
CMF ID: 1459
Install a traffic signal
Description:
Prior Condition: unsignalized intersection.
Category: Intersection traffic control
Study: Development of Models to Quantify the Impacts of Signalization on Intersection Crashes, Pernia et al., 2002
Star Quality Rating: | [View score details] |
Rating Points Total: | 30 |
Crash Modification Factor (CMF) | |
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Value: | 0.83 |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Crash Reduction Factor (CRF) | |
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Value: | 17 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Applicability | |
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Crash Type: | All |
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: | All |
If countermeasure is intersection-based | |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | |
Traffic Control: | Signalized |
Major Road Traffic Volume: | Minimum of 927 to Maximum of 125519 |
Minor Road Traffic Volume: | |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | 1989 to 1998 |
Municipality: | |
State: | FL |
Country: | |
Type of Methodology Used: | Simple before/after |
Sample Size (sites): | 447 sites after |