...2 each year is a car-free day in Klagenfurt and Graz. To promote acceptance of these measures, a PR campaign was launched.
To reduce the amount of PM from public transport, 114 city buses in Graz were adapted by âretro-fittingâ particle oxidation catalysts, achieving a 70% reduction when used with bio-diesel. In Klagenfurt, 15 buses were fitted with particle filters, achieving a near-100% re ...