The costs for health and environmental damage caused by transport are not covered by those responsible; instead they are borne by the public in general, for instance through social security contributions and taxes. Road traffic is the single most responsible factor for driving up these costs: 83% of health and environmental costs are due to road traffic, with air traffic and rail traffic accounting for 14% and 2% respectively. For Switzerland in particular a new study on commuter traffic shows that more and more people are using their cars to travel to work.
Sources and information: Infras (26.10.2004) www.infras.ch (de/fr/en); Frick, R. (2004): Pendlermobilität in der Schweiz. Neuchâtel (de)