The transport sector produces 23% of greenhouse gas (GHG) emissions globally. While the mitigation of climate change requires GHG emissions to be drastically reduced, the emissions from the transport sector are expected to grow. The purpose of this study is to produce alternative scenarios which meet the target of 80% CO2 emission reduction by 2050 for the Finnish transport sector and to analyse the carbon abatement potentials, costs and benefits of the required behavioural and technological measures. We found that the most cost-efficient measure for the society is to support a shift from private car use to shared car use through increasing car-sharing and ride-sharing. Aiming to reach the emission reduction targets solely through technological measures would require a rapid uptake of alternative energies and the society would not receive the possible benefits, including health benefits, energy savings and fixed car cost savings.

中文翻译：

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减少二氧化碳的运输成本和收益：社会技术方案

全球运输部门的温室气体排放量占全球总排放量的23％。虽然缓解气候变化需要大幅度减少温室气体排放，但交通运输部门的排放有望增加。这项研究的目的是提供替代方案，以达到到2050年芬兰交通运输部门二氧化碳排放量减少80％的目标，并分析所需的行为和技术措施的碳减排潜力，成本和收益。我们发现，对社会而言，最具成本效益的措施是通过增加汽车共享和乘车共享来支持从私人汽车使用向共享汽车使用的转变。