CMF / CRF Details
CMF ID: 5468
Landscape Medians at Intersections
Description:
Landscape medians in form of ground cover, plant, or trees.
Prior Condition: Tree setback from median nose is 100ft
Category: Access management
Crash Modification Factor (CMF) |
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Value: | 0.82 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.09 |
Crash Reduction Factor (CRF) |
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Value: | 18 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 9 |
Applicability |
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Crash Type: | All |
Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
Roadway Types: | Principal Arterial Other Freeways and Expressways |
Street Type: | |
Minimum Number of Lanes: | 2 |
Maximum Number of Lanes: | 6 |
Number of Lanes Direction: | |
Number of Lanes Comment: | 2, 4, and 6 Lanes |
Crash Weather: | Not specified |
Road Division Type: | Divided by Median |
Minimum Speed Limit: | 30 |
Maximum Speed Limit: | 50 |
Speed Unit: | mph |
Speed Limit Comment: | 30 - 50 mph on Major Road / 15 - 30 mph on Minor Road |
Area Type: | Not specified |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | Not specified |
If countermeasure is intersection-based |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | 3-leg,4-leg |
Traffic Control: | Stop-controlled |
Major Road Traffic Volume: | Minimum of 4900 to Maximum of 49500 Annual Average Daily Traffic (AADT) |
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: | |
State: | FL |
Country: | |
Type of Methodology Used: | Regression cross-section |
Sample Size (crashes): | 174 crashes |
Other Details |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Apr 30, 2014 |
Comments: | The CMF represents the expected change in injury crashes when the tree setback from median nose is increased from 100ft to 200ft. |