Quote:
I've heard that the 'trigger speed' is actually very close to the posted speed limit- something like +2mph.
Is this true?
Most car speedometers are only accurate to plus/minus 10%!



The guideline is "10% + 2mph", in a 30 it is 35, in a 70 it is 79. In reality most fixed cameras seem to be set higher than this. There are many fixed cameras that are either dummys or very rarely have film in them.

In UK speedos have to over read by upto 10% when the car is new. They are not allowed to under read. All the cars I have driven in the UK over read by 10% or more.


Edited by andy (07/09/2006 14:31)
_________________________
Remind me to change my signature to something more interesting someday