On 15 Feb, 08:45, "Nick Lawford" wrote:

Aylesbury to Claydon is also not electrified at all.

While Old Dalby is currently (excuse the pun) NR 25 kV AC and Movias
need LU 660 VDC, the grid feeder substation and switching gear will
already be in place, along with linseside fencing to latest standards
and so on. Its rather simpler to convert an already existing
electrification from one to another sytem even if they are very
different.

How do they get around the ban on new unprotected third rail
electrifications? Does this not apply to third/fourth rail systems?
Does it not apply to this line as it's not open to the public? Does
this count as an extension to an existing system (the London
Underground) even though it's not physically connected to it? Would
they have to obtain a special excemption from the regulations to do
this?