There was a "Myth Busters" episode where they tried all those things... the
spray, the plastic cover, going really fast (too fast for the camera)...
none of them worked. They got a photo of the plate every time.
Blair
----- Original Message -----
From: "Paul Hunt" <paul.hunt1@blueyonder.co.uk>
To: "David Breneman" <david_breneman@yahoo.com>; <mgs@autox.team.net>
Sent: Sunday, November 04, 2007 6:14 AM
Subject: Re: [Mgs] "black plate cars"
> The UK has had reflective plates for new cars since 1973 for reasons of
> visibility at night. Cars older than that can still carry 'white on
> black',
> but they don't make any difference as far as laser speed guns (which don't
> use the number plate anyway), photographic speed traps, or automatic
> number
> plate recognition systems go. Here plates only have to be replaced if
> damage affects 'normal' readability of the registration, reflection isn't
> measured. There are reputed to be sprays you can apply to the front of
> the
> thick plastic sheet, which itself is very reflective to the flash used in
> some photographic speed traps, which renders the characters unreadable.
> Whilst it is illegal to render your number plate unreadable my any manual
> or
> automatic means the government may decide to introduce now or in the
> future,
> it isn't illegal to sell them :o). There is also a transponder available
> which when it gets a 'hit' from a laser speed detector sends a signal back
> at a much higher velocity and preventing it from recording the vehicle
> speed.
>
> PaulH.
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