Its fleet consists of single-decker, double-decker, vestibule, low-floor, disabled-friendly, air-conditioned and Euro III compliant diesel and compressed natural gas powered buses.[69] BEST introduced air-conditioned buses in 1998.[70] BEST buses are red in colour, based originally on the Routemaster buses of London.[71] Maharashtra State Road Transport Corporation (MSRTC, also known as ST)[72] buses provide intercity transport connecting Mumbai with other towns and cities of Maharashtra and nearby states.[73][74] The Navi Mumbai Municipal Transport (NMMT) and Thane Municipal Transport (TMT) also operate their buses in Mumbai, connecting various nodes of Navi Mumbai and Thane to parts of Mumbai.[75][76]