"Richard Bullock" wrote in message
...
If you are caught by a cam on a DC (assuming national speed limits), it
follows that you are driving at more than 70mph.

But that (DCs being NSL) is a big assumption in today's world. Many
entirely rural dual carriageway roads with modern alignments and few
junctions have had their speed limits reduced below the NSL.

And then you turn off down a narrow country lane and find that you are
allowed to go faster than you were on the dual carriageway. Makes you wonder
what various council transport departments are on sometimes.

Dave.