I'll recommend you do not do that. I'm sure
you could just ask the TO or someone else for authorised
access.
There are somebody mentioned that as well. That person (cant
remember the name) said it is still illegal though to ask for such
access from TOs (Staff). So, both are "illegal" too.
Extracted from Rapid Transit Act
Operating rapid transit system without
licence
12. —(1) No person except the Authority or a
person licensed by the Authority shall operate any rapid transit
system.
(2) Any person who operates any rapid transit system in
contravention of subsection (1) shall be guilty of an offence and
shall be liable on conviction to a fine not exceeding $50,000 or to
imprisonment for a term not exceeding 6 months or to both and, in
the case of a continuing offence, to a further fine not exceeding
$5,000 for every day during which the offence continues after
conviction.
Thus, unless someone really CM the train (Nah, in depot do such
thing, probably need to violate red lights, it may derail the train
and I dont GTA the TOs), I cant really find offence doing such
stunts apart of Trespassing.