It is estimated that 1,600 people die prematurely in London as a result of air pollution.
London fails to meet 10 of the 11 Air Quality Objectives set by the Air Quality Standards committee.
The typical urban 4x4 vehicle will have 25% more accidents, is 27% more likely to be at fault, and is twice as likely to kill the accident victim.
Current levels of transport account for over 26% of the UK’s greenhouse gas emissions.
In heavy traffic jams, the air quality can be poorer inside the car than out.
The average speed of traffic in London today is 8mph - the same as it was in the days of horses and carriages.
On average each air passenger throughout the world is responsible for adding 300kg of carbon dioxide to the earth’s atmosphere each time they get on a plane.
Air travel produces 19 times the pollution as rail travel, and flight numbers are expected to double by 2020 and triple by 2030.
Traffic delays cost the country around £15billion a year in lost productivity.