On Nov 17, 11:53 am, "Paul Scott"
wrote:

The 'flow diagram' for Key Output 2 in the South London RUS suggests there
will be a 6tph '8 car' service through the core, 2 each from Orpington,
Sevenoaks, and Maidstone East.

Would a 6tph service at Kentish Town be considered adequate?

Probably ...

.... but my point is not whether or not the service level is adequate
for that station, but about the effect one short platform station has
on the central core capacity.

Lets do my sums again then ... out of 24 TPH , if 6 TPH call Kentish
Town and *if* SDO is not implemented then one quarter of the trains
through the core are 8car not 12car - 24x12=288; (18*12)+(6*8)=264;
264/288 = 0.91666666666etc, an 8-9% reduction cap caused by one
station.


However at least the ECML RUS does confirm that the 8 tph off the ECML link
will all be 12 carriages long,


And doing my sums for Midland route then, instead of 16 x 12 car TPH =
192 cars/hour there are (10x12)+(6x8) = 168; 168/192 = 0.875 i.e. less
12-13% capacity than maximum.

Of course I understand Kentish Town is probably near impossible to
make 12 car without disproportionate expenditure nonetheless it has a
very significant impact on the route as a whole ... without SDO.

--
Nick