On Fri, 30 Jul 2010 07:23:26 +0100
Charles Ellson wrote:
Did anyone believe it worked anyway? Why would anyone writing the software
make the cars lane part of the database key in the first place? It makes
no sense whatsoever.

Possibly for the sake of simplicity to allow for e.g. the difference
in speed between two vehicles remaining in parallel in lanes 1 and 4
where there is a significant curve between measurement points. If the
usual 10% etc. tolerance is ignored and speed limits applied strictly
then in theory it would be possible for the two vehicles to stay
together with one under and one over the speed limit.

In theory , but it would have to be one hell of a small radius curve to make
a significant difference. Not something you're likely to find on the sort
of roads these cameras are placed on.

B2003