On Dec 4, 6:47*pm, "Recliner" wrote:

. Presumably
there's some sort of points mechanism to get the vehicles on and off the
running tracks,

I good while back I was able to visit the bits you can't normally see
- ''the shed'' in spotters terms.

Theres no ''points'' that I recall nor anything analogous to them.
The only way to move cars on and off tracks is outside on the
''running line'' and a heavy lift road crane would have to be used.
There is no other means - and really there is no need to.

--
Nick