Before and After Safety Study of Roadways Where Medians Have Been Added: [Summary]

2012Date taken from the publication date for the final report.PDFBriefBDK80 977-18Two way left turn lanesMediansTraffic crashesHighway safetyEvaluationTraffic safetyHighwaysDesignTraffic controlSafety and Human FactorsRaised mediansOperations and Traffic ManagementI20: Design and Planning of Transport InfrastructureI73: Traffic ControlFloridaUnited StatesFlorida. Dept. of TransportationWalker, H.Alluri, PriyankaFlorida International University. Lehman Center for Transportation ResearchFlorida. Dept. of TransportationUS Transportation CollectionIn this project, Florida International University researchers had a primary goal of evaluating the safety impact of converting two-way left-turn lanes (TWLTLs) to raised medians. On the face of it, such a conversion would have an obvious, positive effect on safety; however, configuration changes on one section of a roadway can have an unexpected effect on adjacent sections. In addition, the presence of medians changes how people access local businesses and how businesses receive and send out shipments. Therefore, the researchers evaluated a number of effects of conversion to gain a larger picture of its impact.74