Buses and taxis (including shuttles), that carry passengers for hire or reward, must meet all the vehicle standards required of them. There are added safety requirements because they provide public transport.
The Land Transport Rule: Passenger Service Vehicles 1999 sets out:
See the additional licence requirements for drivers of passenger service vehicles.
Find out more about passenger service vehicle requirements
Read Is your passenger service vehicle compliant?
The Ministry of Education(external link) manages school bus contracts and has particular requirements to ensure school bus safety.