Transport related emissions
In 2006, transport related emissions of carbon dioxid (CO2) amounted to 15.9 million tonnes, or 35 % of total CO2 emissions in Switzerland. Having increased by more than 8 % between 1990 and 2000, CO2 emissions from traffic have since remained at a fairly constant level. Road traffic is responsible for 97.2 % of transport-related CO2 emissions (excluding international air traffic). Around 70 % of these emissions come from private cars. Between 1990 and 2006, as a result of advances in automotive technology, CO2 emissions per person kilometer fell by 13 % in the private motorised transport sector. However, this improvement was offset by an increase in traffic volumes. In a comparison with EU-15