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From: fbr@utastro.UUCP (Frank Ray)
Newsgroups: net.auto,net.auto.tech
Subject: Re: Laser Pulse Speed Enforcing
Message-ID: <509@utastro.UUCP>
Date: Fri, 14-Mar-86 10:41:58 EST
Article-I.D.: utastro.509
Posted: Fri Mar 14 10:41:58 1986
Date-Received: Tue, 18-Mar-86 01:29:50 EST
References: <378@ur-tut.UUCP> <843@kitty.UUCP> <442@utastro.UUCP> <861@kitty.UUCP> <252@noscvax.UUCP>
Distribution: na
Organization: U. Texas, Astronomy, Austin, TX
Lines: 28
Xref: watmath net.auto:9806 net.auto.tech:912
Summary: Yes...

In article <252@noscvax.UUCP>, jordan@noscvax.UUCP (Martin C. Jordan) writes:
> 
>         I have a question concerning the practical implementation of
> an IR/visible laser pulse to speed enforcement. Laser radiation will
> either be reflected, absorbed, or backscattered at the surface of the 
> oncoming vehicle. Unless the vehicle is a MACK truck, the reflected 
> component will be reflected at some angle AWAY from the direction of 
> arrival.
> ...
> Martin Jordan
 
Now suppose you were going to design an IR speed gun.
Wouldn't you want the beam large enough to insure its successful
operation in practice, when used by the average traffic cop?

True, one could design a  system only sharpshooters could use,
with a telescopic sight.  I suppose the states could also require
that each motor vehicle carry a laser reflector on the front,
for the sharpshooters to shoot at.  Corner cubes would work fine
in that regard.  Think of the new markets.

Some useful things may come out of this laser research, actually,
such as automatic highways.  "Sorry I'm late getting home, honey.
The highway crashed."

How about a LASER DETECTOR BRA?  Come on you fuzz, shoot me.

fbr