"alex_t" wrote in message
oups.com...

And don't tell me that you think that all those excessive "security"
or "important" announcements are actually needed.

TRANSEC - Transport Secuity Agency do. There is a minimum requirement from
them to play security announcements every 10 minutes. If service information
changes shortly after one being played, you will invariably hear another
security announcement before the 10 minute standard as even the most modern
PA systems provided do not allow you to change one message whilst the system
is running with others. You have to stop all messages, insert your new
recording then queue them all up to play again.