Light Rail Vehicles - LRT, ICTS, Monorail, and more

[kps]

While catenaries are not pretty, a bidirectional monorail would also need to be wider (two trains need to fit) -- and isn't a walkway a requirement as well, for emergency exit in case of train engine failure?  That would make the monorail beam pretty much as wide as our LRT embedded track concrete, I think.

Yes, that's what I was trying to get at with my question — in an apples-to-apples comparison, how small can you go?. Elevated conventional rail *on its own* is not that big,

   

and possibly 2017 engineering could improve on 1917 engineering.