On 25/03/2011 12:16, Doug wrote:
On Mar 25, 10:03 am, Matt wrote:
On 25/03/2011 09:01, Doug wrote:

For several days now there have been moderate pollution warnings but
today, Friday, this has turned to 'High' and people are advised to
stay indoors. So cyclists beware and we can thank the many motorists
on our roads for contributing to that harmful pollution.

ITYF it's not "motorists", but London buses, taxis and goods vehicles
and European power stations and agriculture that are the main problems.

No, road traffic is the main problem in London and cars are 80% of all
road traffic.

They may be 80% of the traffic, but how much of the troublesome
pollution do they cause - 20%, 30%?

Buses and taxis are a big pollution problem in central London and goods
vehicles are a big problem anywhere that industry and shops are present.
And much of the recent pollution blew in from Europe anyway.

--
Matt B