CMF / CRF Details
CMF ID: 2814
Install dynamic advance intersection warning system
Description: Install dynamic advance intesrection warning signs to provide real-time traffic condition (VEHICLES ENTERING WHEN FLASHING).
Prior Condition: No Prior Condition(s)
Category: Advanced technology and ITS
Study: NCHRP Report 650 - Median Intersection Design for Rural High-Speed Divided Highways, Maze et al., 2010
Star Quality Rating: | [View score details] |
Rating Points Total: | 10 |
Crash Modification Factor (CMF) | |
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Value: | 0.76 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 1.16 |
Crash Reduction Factor (CRF) | |
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Value: | 24 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 115.7 |
Applicability | |
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Crash Type: | Angle |
Crash Severity: | All |
Roadway Types: | Principal Arterial Other Freeways and Expressways |
Street Type: | |
Minimum Number of Lanes: | 4 |
Maximum Number of Lanes: | 4 |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
Crash Weather: | Not specified |
Road Division Type: | Divided by Median |
Minimum Speed Limit: | 55 |
Maximum Speed Limit: | 55 |
Speed Unit: | mph |
Speed Limit Comment: | |
Area Type: | Rural |
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: | Stop-controlled |
Major Road Traffic Volume: | Minimum of 7700 to Maximum of 10100 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: | 1990 to 2004 |
Municipality: | Columbus County |
State: | NC |
Country: | USA |
Type of Methodology Used: | Simple before/after |
Sample Size (crashes): | 1 crashes before, 1 crashes after |