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原文传递 Assessing Air Quality Impacts of Managed Lanes.

题名：	Assessing Air Quality Impacts of Managed Lanes.
作者：	A. L. Stuart; P. S. Lin; C. Lee; H. Yu; H. Chen;
关键词：	air pollution,environmental impacts/high occupancy vehicle lanes, transportation systems, bus performance, case study, emissions, managed lanes/high occupancy vehicle lanes, transportation systems, bus performance, case study, emissions, managed lanes
摘要：	Impacts on transit bus performance and air quality were investigated for a case study high-occupancy/toll (HOT) lane project on a corridor of I-95 near Miami. Trends in air pollutant concentration monitoring data in the study area first were analyzed. Traffic movement prior to and after implementation of the HOT lanes was simulated using corridor micro-simulation (CORSIM). Emissions of carbon monoxide, nitrogen oxides, particulate matter, hydrocarbons, and benzene were estimated using MOBILE6.2. Finally, changes in ambient pollutant concentrations were estimated using AERMOD dispersion simulations. Results indicate decreased congestion on the corridor due to the HOT lane implementation, particularly for the northbound direction during the afternoon peak hours. Specifically, bus travel times were reduced by nine minutes, on average, during these hours. Emissions results were mixed, with small estimated increases for CO, NO(sub x), PM(sub 10), and benzene and small decreases for HCs. Slightly higher ambient concentrations were found in most of the study area for the pollutants modeled (CO, NO(sub x), and benzene), with the largest increases near the corridor. Overall, changes in both emissions and concentrations were small, indicating small impacts of the managed lane project on air quality. An additional outcome was the identification of factors contributing to uncertainty in the emissions estimation. / Title Note: Final rept. / Supplementary Notes: See also PB2011-103879, summary report. Sponsored by Florida State Dept. of Transportation, Tallahassee. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A05 / Monitor Agency Acronym: FDOT / Monitor Agency Number: BDK85-TWO-977-11 / Corporate Author Code: 117329002 / Classifivation: Unclassified report
报告类型：	科技报告