In message , Tim Snell
writes
Wouldn't a wall of conifers have an effect on absorbing the noise?

Apparently you need a huge amount of vegetation (50m) to halve the
noise... However foliage does give the all important psychological
barrier that prevents viewing the road.

Think fence + trellis + attractive climbers - leylandi

What if they were planted in the middle of the road. That would stop
all the traffic then there's be no noise.


On a more serious note, a water feature could help raise ambient noise
levels in a pleasing manner and make the traffic noise less of a
nuisance.

--
Clive Mitchell
http://www.bigclive.com