9/22/2023 0 Comments Xtool software![]() Some of the key junctions in CAP-X include: displaced left turn, three-lane roundabout, double crossover diamond, and the single point interchange. The Excel workbook has 32 spreadsheets that analyze 17 different types of innovative junctions. This workbook is designed to be very simple with only volume counts and number of lanes needed to be entered into the tool. The entire CAP-X tool has been developed using Microsoft Excel basic knowledge of Excel is necessary to use CAP-X. The roundabouts are evaluated using the equations in the Highway Capacity Manual (HCM) 2010 to determine lane capacities, except the three-lane roundabout. ![]() The intersections and interchanges are evaluated using the method of critical lane volume summation to provide planning capacity assessment at each crossing. The Capacity Analysis for Planning of Junctions (CAP-X), as the name suggests, is a tool that can be used to evaluate selected types of innovative junction designs (eight intersections, five interchanges, three roundabouts and two mini-roundabouts) using given peak flow volumes. ![]() The Federal Highway Administration (FHWA) Office of Operations Research and Development (R&D) has developed an extensive new tool that expands on the previous release of the Alternative Intersection Selection tool in 2009. Capacity Analysis for Planning of Junctions (Cap-X) Tool ![]()
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