United States Department of Transportation
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Development of Analytical Tools for Evaluating Operations of Light Rail at Grade Within an Urban Signal System – Final Report
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1994-11-01
[PDF-2.18 MB]
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Edition:Final: September 1991 - August 1994
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Abstract:As the engineering and planning communities continue their progress toward managed and integrated transportation systems, transit will play an increasing role. Fifteen United States cities have already selected and implemented light rail transit (LRT) as a rail transit alternative. As engineers plan and design new or expanded systems, it is essential that they have at their disposal the techniques and procedures necessary to make decisions for LRT placement, system design, and operations. This report, the fourth and final report for project 0-1278, combines and enhances the information contained in the three interim reports and contains a step-by-step procedure for analyzing LRT at grade crossings and crossing impacts within signalized networks. Based on the proposed system features and location, transportation analysts identify crossing type and environment. They then select a model based on listed criteria, code and calibrate the model to existing conditions or values provided and perform the analyses. The procedure includes checks for system failures. Finally, analysts assign user costs to the LRT impacts identified and quantified by the procedure and select the optimum alternatives for LRT operation.
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