(1) A rail operator, its rail personnel, and any person authorised to access a railway line must comply with instructions given by the network controller with respect to the entry onto, occupancy of, or movement of rail vehicles on, a railway line.
(2) Despite subsection (1), a person may refuse to comply with an instruction if that person believes on reasonable grounds that complying with the instruction would imminently cause an accident or incident.
(3) If a person refuses to comply with an instruction given by a network controller, that person must immediately notify that network controller of the refusal.