"Jamie Thompson" wrote in message
...
Shame they're missing the opportunity to add the sorely-missing
flyover/under to link the DC lines with the St. Albans Abbey branch.
Handing that line over to LO would do wonders for the service, which
would then get more people actually using it.

It's single track with, AIUI, no crossing loop. So without double track, or
at least a crossing loop, you can't increase the frequency (end-to-end
journey time of 16 minutes, and a round trip generally every 45 minutes}.

Peter