Clive wrote:
In message , David
Bradley writes
On Sun, 6 Nov 2005 17:31:23 +0000, Clive
wrote:

In message , David
Bradley writes
Then I am one ofthe few because there is no such thing as a clean
diesel, only a less dirty one. Progress would have been served
if the route had been electrified with zero polluting,
Such a thing doesn't yet exist.

Please explain further. In my book a trolleybus IS zero polluting.

David Bradley

Not only do trolley buses pollute, (carbon from motor brushes
asbestos from brake pads etc.) but there is also the pollution
from the source of the traction current supplied.

Asbestos is no longer used in brake pads. From the DfT website:
"Regulations introduced under the Consumer Protection Act, the Road
Vehicles (Brake Linings Safety) Regulations 1999, prohibited the
manufacture, supply or fitting of asbestos-based brake linings."

--
Richard J.
(to e-mail me, swap uk and yon in address)