On Sun, 16 Nov 2008 13:52:31 +0000, asdf
wrote:

Why doesn't it just send an automatic radio message to control telling
them to call 999, rather than relying on passers-by?

Because it might be too late, and also because it may act (like a
burglar alarm bell) as a deterrent.

Neil

--
Neil Williams
Put my first name before the at to reply.