Public transport
Public transport systems in Mumbai include the Mumbai Suburban Railway, Brihanmumbai Electric Supply and Transport (BEST) buses, black-and-yellow metre taxis, auto rickshaws and ferries. Suburban railway and BEST bus services together accounted for about 88% of the passenger traffic in 2008. Auto rickshaws are allowed to operate only in the suburban areas of Mumbai, while taxis are allowed to operate throughout Mumbai, but generally operate in South Mumbai.
Taxis and rickshaws in Mumbai are required by law to run on compressed natural gas, and are a convenient, economical, and easily available means of transport. Mumbai had about 1.53 million vehicles in 2008, 56,459 black and yellow taxis, and 102,224 auto rickshaws, as of 2005.
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 Thane, the Sion Panvel Expressway from Sion to Panvel and the Western Express Highway from Bandra to Borivali.
Mumbai's bus services carried 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
