Clive D. W. Feather wrote:
In article , Richard
J. writes
There is no law against the use of a mobile phone while moving on a
motorway.

Yes, there is. The Road Vehicles (Construction and Use) (Amendment)
(No. 4) Regulations 2003.

Which does not forbid the use of a mobile phone while moving on a
motorway. Nor does it forbid the use of a mobile phone while driving
on
a motorway.

What I assume
you meant was that the system would not be able to distinguish
between legal and illegal use of a mobile mobile, not that all use
was legal.

Whereas you implied that all use of a mobile on a motorway was
illegal, which is arrant nonsense.

It's a semantic issue. What does "There is no law against activity" mean?

(a) activity is lawful in all circumstances, or
(b) There is no law which prohibits activity in general, though specific
forms of activity may be unlawful.

You evidently think it means (b); I think it means (a). I suggest we agree
to differ.

--
Richard J.
(to e-mail me, swap uk and yon in address)