Inderscience Publishers

An approach for road air emissions calculation: Portuguese case-study

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A methodology to estimate road transportation emissions was developed with the main objective of improving emission estimates for those pollutants that are most dependent on the vehicle class and abatement technology. Emissions were estimated with a detailed level of disaggregation allowing the evaluation of measures aiming key source groups rather than road traffic in general. Those measures include reduction of speed limits, changes in fleet age or engine capacity, introduction of new technologies, among others. The methodology is coherent with the National Emission Inventory in terms of assumptions, activity data and emission factors.

Keywords: road transport, atmospheric emissions, climate change, air quality, air pollution, environmental pollution, traffic emissions, vehicle emissions, Portugal

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