RE: Another speeding ticket question

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <199910110307.VAA27717@chevalier.rmi.net> "Sherry & Chuck Clark" writes:

>   VASCAR ...

> This procedure takes more
> than one officer(usually) to carry out. Here's how it was explained to
> me: Jonny law #1 is at a vantage point where he can see both white
> lines in perfect view. As you cross the first line, he enters it in his
> computer in the cruiser. As You pass over line number two, he hits
> another button as a finishing time. This computes exactly how fast
> you were travelling.

They use it here in two different ways.  First as you describe, by
driving a stretch between two landmarks and thus measuring it with the
car, then holing up.  Second, they can do it dynamically - press a
button when you pass a landmark, another when the police car passes it,
another when you pass a second landmark, and another when the police car
passes it.  The first and third give your time over a distance, and the
second and fourth enter the distance.  Then the lights go on.  They
do it from stealth cars, too.

--
 Phil Payne
 UK Audi quattro Owners Club
 Phone: 07785 302803   Fax: 0870 0883933