In message ,
Colin Rosenstiel writes
The power is fed from Milton, just North of Chesterton Junction at the
Northern end of Cambridge and isn't sufficient to restart a 8 car
train in section, apparently.
This is a backward step then. Forty years ago, a train had to be able
to stop and restart on any part of it's run without any assistance, and
the locomotives load would be adjusted accordingly, this was the start
of the TOPS system and a start at getting rid of banking engines.
--
Clive