Vehicle occupants are exposed to significantly greater health risks than those travelling by other modes. The excellent Essential Evidence series summarises key high quality evidence about transport and health and the latest one concludes that “vehicle occupants are, in fact, driving in a ‘tunnel’ of pollutants” with exposure levels significantly higher than walking, and also for cycling.

This is also the conclusion of a former government chief scientific adviser, Prof Sir David King, who says “You may be driving a cleaner vehicle but your children are sitting in a box collecting toxic gases from all the vehicles around you.”

Source: 162: Air pollution exposure among motor vehicle occupants – Travelwest