The routes the 318s and 320s work over are set up for 3 or 6 car operation, with a 6-car maximum.I know there will be a simple explanation but why didn't we just send four car units to give the Scots a bit more elbow room? Platform length? Not power supplies one assumes. Consistent fleet?
with a 6-car maximum
Platform lengths more than anything else, I believe.So it is to allow six by using two sets rather than restrict to three. Presumably this is things like stop signs, signal placement and so on.
Thanks, though it seems odd on a railway where there are a lot of capacity issues.
They were moved to Long Marston last year
brel york, I think my post may have been misunderstood. I read somewhere online that the northern 3 Car formations could be a hybrid forming of a 150/2 in between a set of 150/1 or the centre Car could be non driving which means the removal of the cab. This is where the redundant 321 cars would play a part in providing end body sections.
To be honest keeping the cab gives flexibility. When central trains did the 150/2 split to make 3 Car sets you did get the occasional 150/1 at one end 150/2 at the other to keep a 2 Car set in service.brel york, I think my post may have been misunderstood. I read somewhere online that the northern 3 Car formations could be a hybrid forming of a 150/2 in between a set of 150/1 or the centre Car could be non driving which means the removal of the cab. This is where the redundant 321 cars would play a part in providing end body sections.