Right, come the revolution...

[Arch]

But you'd have to have a David Essex lookey-likey gyspy/chirpy cockernee standing by on every monorail junction to move the points and pinch your girlfriend's bottom!

Excellent! That will provide suitable gainful employment for a lot of chaps.

 

[Arch]

http://faculty.washington.edu/jbs/itrans/switch.htm

Cheers for that! I assumed it must be possible. In fact I hadn't even considered that it wasn't!