Singapore has a comprehensive and efficient public transportation system that includes an extensive MRT (Mass Rapid Transit) network, bus services and cabs. The MRT system covers most of the island and is the fastest and most convenient mode of transportation. Public buses are also available and cover areas not accessible by the MRT system. Cabs are also readily available and can be hailed on the street or booked in advance. In addition, there is an efficient and well-developed network of bike paths and bike sharing services for those who prefer to travel by bike.