Car drivers and passengers inhale two to three times more air
pollution than pedestrians and cyclists, according to UK Government
Cars effectively travel in a tunnel of pollution, breathing
in fumes from the cars in front. Rush hour conditions create
the highest levels of in-car pollution, but motorway driving
generates increased levels of nitrogen oxides. Although they
breathe faster as they pedal, cyclists receive less pollution
because pollution levels are lower at the edge of the road.
Pedestrians receive the lowest pollution of all.
The report also claimed that people travelling by bus inhale
less pollution, but did not explain why.