ABSTRACT
All motorized travel is carbon-intensive, but bus and rail are generally far better than cars. Actual carbon emission figures vary according to the type of vehicle and the number of people using it. Intercity coaches are best – as low as 20g of CO2 per passenger kilometre. These coaches travel long-distances and often carry large numbers of passengers. This makes them the best form of travel if one wants to avoid carbon dioxide. On the other hand, empty rural buses are sometimes as bad as cars in terms of emissions per passenger.
