Side street routes to avoid city pollution can cut exposure by half

Clean air signposts and online walking maps to sidestep diesel fumes would benefit public health, finds study

Taking a side street route when walking through a city cuts a person's air pollution exposure by half, according to a new study.

Signposting these clean air routes and providing online maps would keep people away from heavily polluted main streets and would benefit their health, the researchers said. In fact the UK group behind the research have developed a new interactive map of London that allows people to put in any route and be shown a low-pollution walking option.