What a lot of people do not realise is that these speed humps also cause a lot of misery for those that live next to them. It is not just the noise of rattly wagons going over them but also the noise of all vehicles accelerating away after having to slow down to go over them.
For some people it is simply too much to bear........
http://news.bbc.co.uk/1/hi/england/o...re/3161840.stm
Not so long ago there was talk of many speed humps having to be ripped up because of new laws about lowering the step height of buses (which would make it impossible for the new buses to go over them). I've not heard any more about that.
The current trend now is to introduce bollards. These can be lit ones on a raised on a kerbed platform centrally in the road or unlit ones (often black!)jutting out from the side of the road on a kerb. Also they narrow the road with painted markings (rather than the more expensive and much more useful idea of widening the pavement and/or providing decicated kerbside parking)
These bollards solve the usual hump damage problems etc but vehicles still make more noise by accelerating away after negotiating the obsticle (assuming the light on the centrally placed bollard has not gone out or been vandalised and you have not wrecked your expensive wheel rims on the bollard's kerb)