CMF / CRF Details
CMF ID: 2993
Convert High-Occupancy-Vehicle (HOV) lanes to High-Occupancy-Toll (HOT) lanes
Description:
convert a High-Occupancy-Vehicle (HOV) interstate segment into a High-Occupancy-Toll (HOT) segment
Prior Condition: High-Occupancy-Vehicle (HOV) interstate segment
Category: Roadway
Crash Modification Factor (CMF) |
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Value: | 0.89 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | |
Crash Reduction Factor (CRF) |
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Value: | 11 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | |
Applicability |
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Crash Type: | All |
Crash Severity: | O (property damage only) |
Roadway Types: | Principal Arterial Interstate |
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: | |
Intersection Geometry: | |
Traffic Control: | |
Major Road Traffic Volume: | |
Minor Road Traffic Volume: | |
Average Major Road Volume : | |
Average Minor Road Volume : | |
Development Details |
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Date Range of Data Used: | 1998 to 2008 |
Municipality: | Minneapolis-St. Paul |
State: | MN |
Country: | U.S.A. |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 1504 crashes before, 569 crashes after |
Other Details |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jul 15, 2011 |
Comments: | This CMF was derived from a comparison group study, but the method does not follow Hauer's book. Data on traffic volumes, speed limits, and thru lanes are not provided. The authors only have crash and volume data for every other year. |