Briefing

Road Transport Speed and Climate Change

September 7, 2005

Traffic speed is a key variable in transport policy. Speed plays a dominant role in a string of transport indicators such as mobility demand, fuel consumption and CO2 emissions, air pollution, noise, safety and congestion.

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This short paper takes reducing CO₂ emissions as a primary angle. First, we will present a short review of the literature on the impacts of speed on CO₂ emissions as well as a range of additional factors. Second, we will look at a couple of policy options to be considered at EU level. [A note from Transport and Environment (T&E) to the CARS21 working group on the ‘Integrated Approach’]

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