Effect of network roadway aggregation levels on modeling traffic-induced emissions inventories

Sbayti, H., El-Fadel, M. and Kaysi, I. (2002) Effect of network roadway aggregation levels on modeling traffic-induced emissions inventories. Transportation Research Part D: Transport and Environment, 7 (3), 163-173. (doi:10.1016/S1361-9209(01)00017-7).

Record type: Article

Abstract

Traffic-induced emissions pose a serious threat to air quality in heavily congested urban centers. While air quality can be characterized through field measurements and continuous monitoring, forecasting future conditions depends largely on estimating vehicle-emission factors coupled with mathematical modeling. Traffic and environmental planners have relied on overall average network speed in conjunction with speed-based emission factor models to estimate traffic emissions. This paper investigates the effect of three levels of roadway network aggregation, macro-scale (overall network basis), meso-scale (roadway functional class basis) and micro-scale (link-by-link basis) on emission inventories. A traffic model and an emission factor model were integrated to determine total emissions in the future Beirut Central District area for these three modeling approaches

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