In article ,
Richard J. wrote:
PhilD wrote on 04 August 2012 13:38:28 ...
On Aug 4, 11:13 am, Walter Briscoe
wrote:
Variable mandatory speed limits, displayed on overhead ...

Aren't all existing motorway limits 'mandatory'? They are not, in
general, enforced particularly well.

PhilD

The limits with the number inside a red circle are mandatory.

And enforced by speed cameras linked to the changing limit on every
second or third gantry (less often on the M42 stretch I think but it
has quite closely spaced signs). Once you know what to look for, you
can see the camera fitted ones as you approach them.

Nick
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