Regulation 16 of the Principal Regulations is amended by omitting subregulations (2) and (3) and substituting the following subregulations:(2) The Commission must not allow a vehicle to operate as a taxi for the first time unless the Commission determines that the vehicle is suitable for that use and the vehicle is (a) not more than 5 years of age if it is proposed to operate the vehicle under a licence that relates to a metropolitan taxi area; or(b) not more than 7 years of age if it is proposed to operate the vehicle under a licence that relates to a taxi area other than a metropolitan taxi area.(3) Except as provided by subregulation (4) , the Commission must not allow a vehicle to operate as a taxi at any time if the Commission determines that the vehicle is not suitable for that use or the vehicle is (a) more than 8 years of age if it has been operating under a licence that relates to a metropolitan taxi area; or(b) more than 10 years of age if it has been operating under a licence that relates to a taxi area other than a metropolitan taxi area.(4) The Commission may allow a vehicle that has previously operated as a taxi to continue operating as such notwithstanding that it exceeds the applicable maximum age specified in subregulation (3) if the Commission is satisfied that (a) the vehicle is still suitable for that use; and(b) the vehicle does not exceed the applicable maximum age by more than 6 months; and(c) by reason of an emergency or other special circumstances, it is necessary to allow the continued operation of the vehicle as a taxi to ensure that the relevant taxi area has an adequate taxi service.