Cyclists are best advised to stay indoors to protect themselves
against drivers. The main cause of unhealthy air pollution in London,
is, of course, motor vehicles.

"...You may notice significant effects such as wheezing or more
difficulty in breathing or chest pains if you have a heart condition."

# Consider reducing exposure by spending less time outdoors
# Try to avoid strenuous outdoor activity..."

http://www.airtext.info

-- .
UK Radical Campaigns.(Recently updated).
http://www.zing.icom43.net
A driving licence is a licence to kill.