If a public address system is installed in premises or infrastructure it must comply with clause 21.1 of AS 1428.2 (1992) on hearing augmentation. If one is installed on a bus, coach, ferry, train, tram or light rail vehicle, people who are deaf or have a hearing impairment must be able to receive a message equivalent to that received by other passengers and the system must comply with the same clause.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.