Fleets of metered taxis, auto-rickshaws and cycle-rickshaws clog the streets of Delhi providing transport for locals and visitors. Rates fluctuate, but drivers should have rate charts available and tourists should ensure the meter is reset, or a price negotiated before departure. A ring railway starts and ends at the Hazrat Nizamuddin Railway Station with trains running in both clockwise and anti-clockwise directions around the city. The Delhi Transport Corporation runs a large fleet of buses covering the entire city, but these are always overcrowded. There are night service buses on selected routes and from the three main railway stations between 11pm and 5am. The Mass Rapid Transit System (MRTS) covers 135 miles (280km) and 164 stations between Delhi and its satellite cities of Faridabad, Gurgaon, Noida, and Ghaziabad. It also has a fast airport line. It is not advised to hire a car in Delhi as the driving is frenetic and the traffic overwhelming. There are parts of the city where walking is the best way to take in the sights and sounds, but in general transport is required to get around.