A Prioritization Process for Access Management Implementation in Utah

10523162007PDFTech ReportUT-07.05Access control (Transportation)Arterial highwaysImplementationHighwaysPerformance indexAccess managementSafety benefitsOperations and Traffic ManagementResearchSafety and Human FactorsI73: Traffic ControlSignal spacingCrash ratesCrash severityCrash typesLand useUnited StatesUtahUtah. Dept. of TransportationBrigham Young University. Dept. of Civil and Environmental EngineeringSchultz, Grant G.Braley, KordelBrigham Young University. Dept. of Civil and Environmental EngineeringUtah. Dept. of Transportation. Research and Development UnitUS Transportation CollectionAppropriate access management techniques can improve the safety and efficiency of arterial roads. To determine which roads can most benefit by the implementation of access management techniques, a prioritization process was developed to recommend various access management treatments. To serve as the basis for the performance index, a database was created including identifying features, characteristics, and crash history for 175 arterial road segments on Utah state routes. Stepwise linear regression was applied to the data collected to determine which characteristics of the roads were correlated with crash rate, crash severity, and specific collision types. Recommendations for access management treatments were given in the form of a decision tree to classify existing or future road segments into subcategories based on volume, signal spacing, land use, and other criteria, with recommendations provided for each subcategory