On 30 Jan, 18:30, Paul Terry wrote:
In message , Basil Jet
writes

I suppose what I'm really asking is whether the heavy rail standard still
has any virtues.

I think a DLR set might struggle trying to reach 140mph on a run down to
Ashford. *

As would the majority of heavy rail I should think. But is it more to
do with what else might hit you on the line?