"Graham Harrison" wrote in message
...

Am I right in thinking Crossrail will have trains of different lengths
operating? Having indicators over the platform doors would then double
up as indicators to which doors would open.

Originally it was going to be two 5x20m units in multiple, with single units
used offpeak, but the recent ITT is for a fleet of 10 car fixed formation
trains. (There is a caveat though, as apparently some trains will
temporarily enter service between Shenfield and Liverpool St in an 8 car
formation.)

Paul S