Energy, Environmental and Mobility Impacts of Car-sharing Systems. Empirical Results from Lisbon, Portugal

By P. Baptista, S. Melo, Catarina Rolim. 2014

200 citations recorded by the source corpus.

Abstract The dominance of road transport, both on passenger and freight movements, has reached alarming levels for society due to their negative environmental impacts as well as societal and economic costs. To reverse this trend, many approaches have been applied, but without significant effects on mobility patterns and on the sustainability of the transport system. Fairly promising results have recently been reported in Europe with car-sharing. This research confirms, as hypothesized by prior research, that car sharing contributes to a more efficient and rational mobility (with lower number of vehicles per capita among members, lower demand for parking space, lower fixed costs and a complement to public transport). Additionally to the lower consumption of physical and economic resources, car sharing can also contribute to the reduction of energy and environmental impacts (added to the direct ones from the changes on vehicle ownership and usage patterns). A case study was carried out in Lisbon, Portugal, to estimate car sharing impacts and the effects of a possible technology change. The results demonstrate that those benefits can represent reductions of 35 or 47% in terms of energy consumption and 35 and 65% for CO 2 emissions, if a shift to Hybrid vehicles (Sc.1) or to Electric vehicles (Sc.2) is promoted, respectively. The impacts of reducing vehicle ownership, in a 1 to 6 ratio, due to the implementation of car-sharing were also estimated. Additionally, a simplified fleet based NPV analysis was performed and the break-even point for which the system would become economically feasible was estimated. The most relevant variables influencing the economic feasibility of the car sharing the cost related variables, reducing the break-even timeframe from 36 to 57%.

Subfields: Automotive Engineering, Transportation

View Paper: https://www.semanticscholar.org/paper/37b06af0c9c387828ea4a19cd90d54c8ee48b89d

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In Automotive Engineering

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Citations in the corpus

An Overview of Shared Mobility (2018, background): “In this context, shared transportation modes are improving the indicators of population mobility by complementing public transportation and by reducing the number of vehicles per capita, parking spaces, and fixed costs [106].”
A behavioral choice model of the use of car-sharing and ride-sourcing services (2017, background): “Baptista et al. (2014) note that car-sharing contributes to more efficient mobility with a lower level of car ownership and use among members, lower demand for parking capacity, and lower vehicle acquisition and use costs as members shed personally owned 6 vehicles in favor of using shared vehicles.”
Analyzing the Effects of Car Sharing Services on the Reduction of Greenhouse Gas (GHG) Emissions (2018, background): “[25] studied the energy, environmental and mobility impacts of car sharing through empirical results for Lisbon, Portugal.”