From:
M Dobson, Feversham Crescent, York.
NO
doubt some DfT scientist has worked out the figures but I feel that the
imposition of a 60mph speed restriction on a 32 mile stretch of the M1 in South
Yorkshire will, in practice, have little effect on air pollution in the area
(Yorkshire Post, January 7).
A
large proportion of motorway traffic is HGVs which are limited to 60mph anyway
so their pollution will not change.
I
do not know the figures but I would think that the difference in emissions
between 60 and 70mph for cars would be quite small. At 60mph, assuming
uninterrupted progress, a vehicle will take approximately four and a half
minutes longer to cover the 32 miles than at 70mph. So slightly less pollution
for longer. Where is the benefit in the proposal? Yorks Post.
