The graph shows development of specific CO2 emissions, defined as emissions of CO2 per transport unit (tonne-km), by freight transport mode (road, rail, maritime, inland shipping) over the period 1995 to 2011.
Data coverage: EEA-32 excluding Iceland and Liechtenstein
Specific CO2 emissions data for all transport modes are modelled data derived from TREMOVE (http://www.tremove.org/model/index.htm) and TRENDS (http://www.forum.europa.eu.int/Public/irc/dsis/pip/library?l=/environment_trends).
Specific CO2 emissions are expressed in grams per tonne-kilometer.
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On very hot days use public transport rather than your car.
Car exhaust emissions react with sunlight and heat to cause polluting gases such as tropospheric ozone. This is the main ingredient of poor air quality and photo-chemical smog, which can cause breathing difficulties. To find out the level of ozone pollution across Europe, go to EEA's Live Ozone Map.
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