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From page 1...
... 1 S U M M A R Y In this report, researchers document the results of multiple analyses focused on developing an improved understanding of wrong-way driving crash characteristics on divided highways, as well as wrong-way countermeasure effectiveness on divided highways and freeways. An in-depth safety analysis of wrong-way crashes using a multistate dataset assessed the impact of median width and various traffic control devices upon wrong-way crashes on high-speed divided highways.
From page 2...
... 2 perspective. These findings led researchers to suggest changes to the definitions of median width and intersection in the MUTCD.

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