Taxis in Australia are highly regulated by each Australian state and territory, with each state and territory having its own history and structure. In December 2014, there were 21,344 taxis in Australia. Taxis in Australia are required to be licensed and are typically required to operate and charge on a fitted taximeter. Taxi fare rates are set by State or Territory governments. A vehicle without a meter is generally not considered to be a taxi, and may be described, for example, as a hire car, limousine, carpool, etc. Most taxis today are fuelled by liquid petroleum gas. A2B Australia owns and operates the Cabcharge payment system, which covers 98% of taxis in Australia, and operates one of Australia's largest taxi networks.