"Taliesin Walker" <taliesin@NOSPAMchariot.net.au> wrote in message 3b2618f9.4298484@news.chariot.net.au">news:3b2618f9.4298484@news.chariot.net.au... > I've never seen these "PIDs" but I'm wondering, what is wrong with > simply having the driver make announcements of the PA, like we do here > in Adelaide? Digitised audio is often clearer. Not necessarily correct, but clearer!