Abstract
This paper examines the possibility of reducing greenhouse gas emissions by using liquefied natural gas (LNG) as an alternative fuel technology for light-duty vehicles. The survey uses a scenario-based traffic simulation approach by applying a simulation of microscopic traffic emissions. We have considered three scenarios: the first scenario, current and pessimistic, presents the case of absence of the intervention of the state and supposes 0% of liquefied natural gas and 100% of diesel; second scenario, optimistic, in case of partial intervention of the state and supposes 50% of liquefied natural gas and 50% of diesel; third scenario, optimistic, in the case of a total intervention of the state, which supposes 100% of LNG and 0% of diesel. SUMO includes two emission assessment models. Both models implement different classes of vehicle emissions. The first model is based on HBEFA v2.1 (a continuous reformulation of the HBEFA v2.1 emissions database). The second is PHEMLIGHT, a derivation of the original PHEM emission model. The results presented in this article are generated by using PHEMLIGHT.
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