On Aug 17, 11:35 pm, John B wrote:
On 16 Aug, 14:38, chunky munky wrote:

You cannot carry on empty in a single track tunnel with a defective
radio unless a second person is also with the train operator or the
OPO alarm still transmits.

That is the rule, sure. Is there a reason why that is the rule (given
that the publicly stated reason for gibberingly paranoid radio failure
"no trains anywhere" rules is passenger protection)? If so, what is
the reason?

--
John Band
john at johnband dot orgwww.johnband.org

The new no radio, no train came in after 2005 bombings through an
Opeational Standards Notice. It dealt with indivdual train, localised
radio failure and complete failure. It was then added into the new
rule book (where as most contents of the revious reference manual were
ommitted).
Is it right to send a train with possibly over 1000 out with no way of
contacting someone should there be a delay to the service, then maybe
requiring the train to be held or diverted, or a passenger alarm is
operated and requires further assistance, or a one under requiring
traction current off? Okay, Tunnel Telephone is there for emergency
use but will also switch off the Traction Current, unless the
overiders happen to be on and being just a handset of dirty copper
wires dont expect very good line quality.
You could of course phone on a BT line as well, then join all the
other calls waiting to be answered by the Service Controller.

Fear of even worse PR must be a key factor, but it also prompts people
to keep the thing working (most of the time anyway), otherwise they
would never bother keeping it working!
The train radio must work for a modern tube, because of modern London.