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Description:
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The Skagit/Cape Horn Corridor, located on State Route
20, is approximately 25.5 miles in length, extending from
Sedro-Woolley (mile post 66.29) to, and through, the City
of Concrete (mile post 97.69).
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The average daily vehicle traffic load ranges from 10,000
at the Sedro-Woolley (West) end of the Corridor to
3,300 vehicles per day at the Concrete (East) end.
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The traffic load is comprised of a mixture of commuter,
commercial and recreational traffic. 188 crashes
occurred during the period January, 2000 – December,
2002.
Significant Characteristics of Crashes:
During that thirty-six
month period, and when compared to all other comparable
roadways in the region, crash data shows the following:
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Exceeding Safe Speed is the leading cause of all crashes
(20% above average), with Following Too Close
and Failing to Yield as the second and third most frequent
causes of crashes.
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Apparently Asleep is a cause of crashes at a rate
370% higher than average.
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Under the Influence of Alcohol is a cause of crashes
at a rate 119% higher than average.
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Improper Passing is a cause of crashes at a rate 195%
higher than average.
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Hit Fixed Object is the leading type of crash on the
Corridor, at a rate 119% higher than average.
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Wildlife strikes are the second-highest collision
type, occurring at a rate 756% higher than average.
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Overturn is the third leading type of crash, occurring
at a rate 357% higher than average.
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Most crash reports note driving conditions as daylight,
dry or clear conditions.
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Weekends tend to have higher crash rates, and the
highest crash rate occurs at 6:00 PM.
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Eighteen is the age group with the highest number
of crashes.
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When it comes to fatal and disabling injury crashes
(11), a significantly different picture emerges.
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Under the Influence of Alcohol is the leading cause
of fatal and disabling crashes and occurs at a rate
41% higher than for comparable roadways in the region!
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The two leading collision types are Hit Fixed Object
and Angle Crashes, both occur at rates higher than
the average for comparable highways in the region. Hit
Fixed Object (+35%) & Angle Crashes (+15%).
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Wildlife Crashes once again shows up as a cause of
fatal and disabling crashes 929% above the average
for similar roadways in the region!
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