over 5.5 million passengers per day in 2008. Public buses run by BEST cover almost all parts of the metropolis, as well as parts of Navi Mumbai, Mira-Bhayandar and Thane. The BEST operates a total of 4,608 buses with CCTV Camera installed, ferrying 4.5 million passengers daily over 390 routes. 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. Maharashtra State Road Transport Corporation (MSRTC) buses provide intercity transport and connect Mumbai with other major cities of Maharashtra and India. Navi Mumbai Municipal Transport (NMMT) also operates its Volvo buses in Mumbai, from Navi Mumbai to Bandra, Dindoshi and Borivali.
Buses are generally favoured for commuting short to medium distances, while train fares are more economical for longer distance commutes.
The Mumbai Darshan is a tourist bus service which explores numerous tourist attractions in Mumbai. Mumbai BRTS (Bus Rapid Transit System) lanes have been planned throughout Mumbai, with buses running on seven routes as of March 2009. Though 88% of the city's commuters travel by public transport, Mumbai still continues to struggle with traffic congestion. Mumbai's transport system has been categorised as one of the most congested in the world.
Road
Mumbai is served by National Highway 3, National Highway 4, National Highway 8, National Highway 17 and National Highway 222 of India's National Highways system. The Mumbai-Pune Expressway was the first expressway built in India, while the Mumbai Nashik Expressway, Mumbai-Vadodara Expressway, Western Freeway and Eastern Freeway is under construction. The Bandra-Worli Sea Link bridge, along with Mahim Causeway, links the island city to the western suburbs. The three major road arteries of the city are the Eastern Express Highway from Sion to
