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原文传递 Predicting Air Quality Effects of Traffic-Flow Improvements: Final Report and User's Guide. Final rept.

题名：	Predicting Air Quality Effects of Traffic-Flow Improvements: Final Report and User's Guide. Final rept.
作者：	DOWLING, R.; GILLEN, D.; IRESON, R.; STOPHER, P.
关键词：	Air-quality; Air-pollution; *Traffic-flow.;Improvement-projects; Prediction-; Methodologies-; Buses-Vehicles; Automobiles-; Rapid-transit-systems; Impacts-; Metropolitan-areas; Conventional-travel-models.
摘要：	The report is based on an in-depth exploration of methodologies used to estimate the impacts of traffic-flow improvement projects on mobile source emissions. It evaluates varying strategic approaches used to develop such methodologies, reviews advanced methodologies used by leading metropolitan planning agencies, and offers suggestions to improve conventional travel models. With major metropolitan areas striving to meet increasing travel demand while improving mobility and maintaining conformity with air quality regulations, this report offers guidance of special interest to metropolitan planning agencies, transportation engineers, urban designers, and public officials and policymakers. The report offers analysts considering a proposed traffic-flow improvement a comprehensive methodology composed of five modules to assess potential impacts on air quality. The analysis of the effects of traffic-flow improvements on mobile source emissions focuses on four areas: operational improvements, travel time savings impacting traveler behavior, travel time savings increasing total demand for travel, and travel time savings stimulating growth and new development in specific areas within the metropolitan region. This report, prepared by Dowling Associates, features a sound methodology that was created, applied, and tested in a dozen case studies. This methodology improves the prediction model for assessing impacts of corridor-level transportation projects and provides an effective tool for estimating the range of impacts possible when traffic-flow improvements are considered in metropolitan areas.
报告类型：	科技报告