On Mon, 26 Jun 2017 07:49:33 +0100
Neil Williams wrote:
On 2017-06-23 18:16:48 +0000, Steve Lewis said:

When ATO/ATP dies, all the trains stop, as they have just stopped
receiving the communication tells no them that they can proceed. The
trains can't switch back to old style manual, as that needs tripcocks
and trainstops (and thus traditional signalling) for safety.

Not if you operate a drive on sight, low speed backup.

Which is pretty much how trams operate all over the world. Admittedly their
braking distances are shorter, but not by much. I've been on a few tube trains
that have done emergency stops and they can stop PDQ.

--
Spud