Evaluation of the TAPCO Sequential Dynamic Curve Warning System

Federal Highway Administration2013PDFTech ReportSmadi, Omar G.Hawkins, Neal R.Hallmark, Shauna L.Knickerbocker, SkylarUnited States. Federal Highway AdministrationIowa State University. Center for Transportation Research and EducationZirlin, JulieUnited States. Federal Highway AdministrationUnited StatesHighway curvesRural highwaysCountermeasuresWarning systemsTraffic safetyHorizontal curvesDynamic signsSDCWSSequential Dynamic Curve Warning SystemsFHWA-HIF-13-040DTFH61-10-D-00025Zirlin, JulieInterim ReportImplementing safety countermeasures on rural horizontal curves to address speeding can improve the safety performance for those locations. State safety and traffic engineers are faced with making decisions on what type of technology to use and which sites to use the technology on in a fiscally constrained environment. The research conducted for this project will evaluate a Sequential Dynamic Curve Warning System (SDCWS) that could be an additional tool for these engineers to use either separately or in combination with other countermeasures to address horizontal curve locations with a history of safety concerns.104