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.