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原文传递 Comprehensive Evaluation of Transportation Projects: A Toolkit for Sketch Planning

题名：	Comprehensive Evaluation of Transportation Projects: A Toolkit for Sketch Planning
作者：	Kockelman, K.; Xie, C.; Fagnant, D.; Thompason, T.; McDonald-Buller, E.; Waller, T.
关键词：	Commuting patterns##Air pollution abatement##Exhaust emissions##Travel demand modeling##Project evaluation##Vehicle emissions##Benefit-cost analysis##Sketch planning##
摘要：	A quick-response project-planning tool can be extremely valuable in anticipating the congestion, safety, emissions, and other impacts of large-scale network improvements and policy implementations. This report identifies the advantages and limitations of existing methods and toolkits for sketch-planning project evaluation. The report also describes the design and application of a new project evaluation toolkit, to assist transportation agencies and their consultants in the project planning phase. The toolkit is a spreadsheet-based application that offers users a familiar and powerful data manipulation interface for evaluation of abstracted networks improvements and modifications, versus a base case scenario, relying largely on traffic counts. The toolkit includes a travel demand prediction module for destination, mode, time of day and route choices, across multiple user classes and implemented as a set of external C++ programs. The toolkit estimates vehicle emissions using an extensive spreadsheet database of EPAs MOBILE 6.2 emissions rates. Crash rates come from Texas-based models, and changes in traveler/consumer surplus (versus base case scenarios) are estimated using the Rule of Half. Estimates of link reliability also are available, and can be included in comprehensive benefit-cost metrics, which discount future impacts over time. The toolkit enables planners to comprehensively yet quickly anticipate and analyze the various impacts of diverse network improvement strategies.
总页数：	115
报告类型：	科技报告