In message
Ivor The Engine wrote:

On Tue, 27 Jul 2010 13:53:41 +0100, Graeme
wrote:

That normally applies far more to urban areas where the difference
between 30 and 40 can be literally life or death. How many speed cameras
do you see in 30mph limit areas? Very few because they won't raise
enough revenue. It is that level of cynicism that has brought them into
disrepute.

Do you have numbers to back up that claim? A quick scan of my GPS
speed camera data lists 2715 fixed cameras in 30MPH zones out of a
total of 3507. I'm not claiming perfect accuracy but it certainly
implies more than your "very few" observation.

How many of those are on dual carriageways that are only technically urban
areas?

As an example in Southampton the only ones I can think of are all on dual
carriageways.

Mind you in Southampton the major problem is not speeding so much as jumping
red lights, I'm all in favour of traffic light cameras.


In the part of Lancashire where I live many villages have 30MPH
cameras to slow cars coming off faster country roads.

Locally the preference seems to be for the speed measuring electronic signs
which have supplanted former fixed cameras so it may be a regional thing.

--
Graeme Wall

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Transport Miscellany at www.greywall.demon.co.uk/rail
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