However, they still pump out particulates and vast amounts of No2.
If someone wants to endorse private transport free zones (e.g. "car" free) on the bais of:"
koz cars kill - innit", then perhaps providing a paper that supports that argument would have been wise.
In Edinburgh, for example, the Council's mad anti-car strategy has totally backfired as the Council's own statistics show that the removal of private vehicles from specific areas (through the introduction of bus priority or bus only routes) has generated areas of worsening pollution (despite the investment of large amounts of cash in cleaner buses).
It would appear that private vehicle catalysts had been doing a good job of cleaning up the mess generated by large diesels.
May 2008
http://edinburghnews.scotsman.com/latestnews/Air-pollution-at-city-centre.4050517.jp
"
Latest figures released by the city council under freedom of information laws show emissions levels across the city have got worse. Average levels of nitrogen dioxide on Torphichen Place and West Maitland Street, close to Haymarket Station, and at a westbound section of St John's Road in Corstorphine, came in at more than twice the EU target."
If you check the relevant Council report, you'll see, for example that in West Maitland Street, 10% of the vehicle traffic (buses) generated 62% of the NO2.
http://www.scottishairquality.co.uk...7_City_of_Edinburgh_Round_1-Stage4_Report.pdf
(Traffic data starts at p 17)
By September 2008 it would appear that the Council had at last recognised where the problem lay:
Councillor Aldridge: "
We've been tackling this and the agreement we have with Lothian Buses to reduce emissions from its buses will be extended to other operators. We'll also be working with freight companies to do the same, especially for 'hotspots'."
When asked if he thought Edinburgh would meet the EU targets by 2010, Cllr Aldridge said: "I am not sure if we will, but clearly Edinburgh is not alone in this regard. Banning vehicles is not realistic because the traffic will find other ways and you will just displace the problem."
http://edinburghnews.scotsman.com/edinburgh/You-must-be-choking-as.4494760.jp