From: John Tserkezis 
Reply-To: Fidonet AVtech Echo 

Jasen Betts wrote:

>  Br>> Every motor vehicle (not being a trailer) manufactured on or
>  Br>> after 1 July 1974 and capable of being driven at a speed in
>  Br>> excess of 40 kilometres per hour on a level road must be fitted
>  Br>> with a speedometer that must:

 >  Br>> (a) indicate the speed at which the
>  Br>> vehicle is being driven in kilometres per hour, and
> 
>  Br>> (b) indicate, when the vehicle is travelling at a speed in excess
>  Br>> of 50 kilometres per hour, a speed that is not more than 10- less
>  Br>> than the actual speed, and

  I've repeated the quote above so there is no mistake about what is written.

> the speedo may read no more than the actual speed less 10 percent.

  It says nothing about percent.  The only "10" units it could
refer to are 
whatever was mentioned in context- kilometres per hour.
  So, if you were doing say the minimum specified measureable speed, 50Km/h, 
your speedo is allowed to read no more than 10 less than this: 40Km/h.

> but I uunderstyand it to mean
> 
> the speed may read below the actual speed by nor more than 10 percent.
> 
> (assuming 10- means 10%)

  As I may have mentioned in this thread, I heard from a mate who heard it from 
his cop mate, they set their radars at 10% + 2Km/h.  He didn't say if this were 
a 'blanket' rule of thumb or an official setting.

  However, if this were the case, a 60 zone would be patrolled at 68.  I have 
never heard anyone being booked at 60anything in a 60 zone, I have only heard 
of people being booked at 70 and above.  This indicates they do indeed go off 
the ADR specs.

  This makes much more sense, because official documents are presentable in 
court, "I read about it on the internet so it must be true",
"rules of thumb" 
and "hearsay" are not.

>  BL> You do have English as a first language, don't you. *You* read it
>  BL> again. It is not "clearly stated" at all. It never is.

> yeahm it only appears to be clear.

  It's as vague as a polititian's promise before election time.
  It gives the lawers something to argue about in court.
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