CMF / CRF Details
CMF ID: 3100
Install lighted pavement marking system for lane delineation
Description:
Prior Condition: Double left turn lanes without lighted pavement markers
Category: Delineation
Study: Evaluation of a Lighted Pavement Marking System for Lane Delineation, Stevens et al., 2011
Star Quality Rating: | [View score details] |
Rating Points Total: | 10 |
Crash Modification Factor (CMF) | |
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Value: | 0.889 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.432 |
Crash Reduction Factor (CRF) | |
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Value: | 11.1 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 43.2 |
Applicability | |
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Crash Type: | All |
Crash Severity: | All |
Roadway Types: | Principal Arterial Other |
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: | Divided by Median |
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: | 4-leg |
Traffic Control: | Signalized |
Major Road Traffic Volume: | Minimum of 28967 to Maximum of 27777 Average Daily Traffic (ADT) |
Minor Road Traffic Volume: | |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | 2009 to 2010 |
Municipality: | Sugar Land |
State: | TX |
Country: | USA |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 9 crashes before, 8 crashes after |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jul 15, 2011 |
Comments: |