Investigation of contributing factors regarding wrong-way driving on freeways, phase II.
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2015-09-01
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Abstract:In the second phase of this project, two major tasks were completed: (1) organizing a national wrong-way driving
(WWD) summit and (2) developing guidelines for reducing WWD on freeways. The first national WWD summit was
held in Edwardsville, Illinois, on July 18 and 19, 2013. The conference proceedings were published by the Illinois
Center for Transportation in 2014. An executive summary on the findings and survey results from the summit are
included in this report. Guidelines for reducing WWD on freeways were published in 2014 as another important
outcome of Phase II for this project. The guidelines include four chapters: introduction, traffic control devices,
geometric designs, and advanced technologies. A 4-hour training course was then developed based on the
guidelines. A pilot training was conducted on March 26, 2015, in Springfield, Illinois. The participants’ comments and
evaluation results are summarized in this report. The final training materials, comprising instructor’s notes and a
student handbook, are submitted with this final report. In addition, another major task was to identify and develop a
methodology to evaluate implemented WWD strategies by the Illinois Department of Transportation. The additional 2-
year WWD crash data (2012–2013) were collected to conduct a before-and-after study. The preliminary results
showed that the number of WWD crashes declined after implementation of the countermeasures. Because most of
the countermeasures were implemented in early 2014, additional after-implementation crash data are recommended
for a more comprehensive evaluation of different countermeasures. Â
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