Abstract

As the transport sector accounts for a quarter of energy consumption in the world, decarbonization of the transport sector would play a critical role in energy transition and climate change mitigation. In this study a global transport model is employed to provide elaborate descriptions on behavioral and technological factors of transport sector for an integrated assessment model (IAM). The coupling of transport model, economic model, and climate model enables the IAM to depict the cross-sectoral interactive mechanisms among transport sector, energy system, climate, and macroeconomy. Then, a set of scenarios are created to investigate the impacts of representative transport policies on energy consumption, emissions, and mitigation cost. The results show that the technological transformation has the stronger reduction potential, but the lifestyle changes would exert more positive effects on macroeconomy because the mitigation cost can be reduced significantly with shared mobility rather than transport electrification. Balanced technological and lifestyle innovations in transport sector deserve more consideration for climate change mitigation.

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