CMF / CRF Details
CMF ID: 9275
Flatten horizontal curve
Description:
Prior Condition: Sharper horizontal curves with longer approach and departure tangents.
Category: Alignment
Study: Another look at the safety effects of horizontal curvature on rural two-lane highways, Saleem and Persaud, 2017
Star Quality Rating: | [View score details] |
Rating Points Total: | 95 |
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Applicability | |
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Crash Type: | All |
Crash Severity: | O (property damage only) |
Roadway Types: | Not specified |
Street Type: | |
Minimum Number of Lanes: | 2 |
Maximum Number of Lanes: | 2 |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
Crash Weather: | Not specified |
Road Division Type: | Undivided |
Minimum Speed Limit: | 50 |
Maximum Speed Limit: | 60 |
Speed Unit: | mph |
Speed Limit Comment: | |
Area Type: | Rural |
Traffic Volume: | Minimum of 207 to Maximum of 19831 Annual Average Daily Traffic (AADT) |
Average Traffic Volume: | 2147 Annual Average Daily Traffic (AADT) |
Time of Day: | All |
If countermeasure is intersection-based | |
Intersection Type: | |
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Development Details | |
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Date Range of Data Used: | 2005 to 2011 |
Municipality: | |
State: | WA |
Country: | USA |
Type of Methodology Used: | Regression cross-section |
Sample Size (crashes): | 3501 crashes |
Sample Size (sites): | 1550 sites |
Sample Size (site-years): | 10850 site-years |
Sample Size (miles): | 680 miles |
Sample Size (mile-years): | 4760 mile-years |