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- W55595550 abstract "Urban areas of Beirut suffer severe traffic congestion due to a deficient transportation system, resulting in significant economic losses. Grade separations are proposed at several congested intersections to alleviate this problem. Air quality, which greatly depends on the geometric configuration of an intersection, is a major environmental concern at these locations. This paper presents an air quality impact assessment at a typical urban intersection and addresses potential mitigation strategies for air quality management in urban areas. For this purpose, air quality measurements were conducted at representative locations to define existing pollutant exposure levels. Mathematical simulations were performed for several scenarios, both with and without grade separations, changes in vehicle mix, and level of service. Assessment of air quality impact significance was conducted by comparing simulated exposure levels with relevant air quality standards. Sensitivity analysis indicated that the introduction of a grade separation, changes in vehicle mix, and level of service lead to decreased exposure to air pollutants by up to 80%." @default.
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- W55595550 date "2000-09-01" @default.
- W55595550 modified "2023-09-26" @default.
- W55595550 title "Paper 7 - Air quality control at congested urban intersections" @default.
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