Queensland Consolidated Regulations Queensland Consolidated Regulations(1) An operator of a relevant service must take reasonable steps to ensure that no more than 1 passenger sits in any adult seat in a vehicle used to provide the service.
(2) However if the vehicle is a bus, 3 primary school or pre-school children may sit in a bench type bus seat designed for 2 adults if--
(a) either--
(i) the seat is not fitted with any seat belts or approved restraints; or
(ii) the seat is fitted with either a seatbelt or an approved restraint for each of the 3 children; and
(b) the placement and construction of the seat allows; and
(c) no child sits in the seat for more than a total of 90 minutes while any 2 other children sit in the seat.
(3) Also, an infant passenger may occupy the same seat as another passenger if--
(a) the vehicle is a bus; or
(b) the vehicle is a taxi and the infant passenger does so in circumstances that do not contravene the Queensland Road Rules.