and West Bengal . Many migrants from Bihar and rural West Bengal are involved in rickshaw pulling. Nowadays except for some parts of Kolkata all the hand pulled rickshaws have been replaced by cycle rickshaws. Fares are usually set by the rickshaw unions. These rickshaws usually operate over short distances due to the manual effort involved, and mainly run on narrow lanes where buses and auto-rickshaws don't ply. These rickshaws are not allowed to ply over main roads of Kolkata. Hand pulled rickshaws are mainly found in some old localities of North Kolkata and South Kolkata. Moreover, cycle rickshaws are also now being replaced by E-Rickshaw. They also ply on narrow lanes and not allowed to ply over main roads. Auto-rickshaws have become a very common mode of transport for short distances. They are usually not metered, and are usually shared. There are several routes, and the auto-rickshaws of a particular route ply between two distinct places of that route only. Colloquially called autos, they usually accommodate three people in the backseat, and one passenger in front beside the driver. The fares are usually quite low compared to other metro cities like Delhi and Mumbai, the minimum fare being Rs10. Unlike other metros, the auto rickshaws do not run on a fare meter. The auto rickshaws are not allowed in major arterial roads and certain part of the city. Many suburban parts of Kolkata have e-rickshaws running on battery. The minimum fare is Rs.10. Colloquially called "totos", they usually accommodate around 4 people with 2 opposite facing seats. Totos are very popular mode of transport in suburban parts of Kolkata and rural West Bengal. They are considered new and cleaner mode of public transport as they run on electricity. Airport The Netaji Subhash Chandra Bose International Airport (also known as Kolkata Airport/Dum Dum Airport) at Dum Dum is the only airport in Kolkata Metropolitan Area, operating both domestic and international flights. It is an important airport connecting Kolkata to different cities of India and neighboring countries of Nepal, Bhutan and Bangladesh. Kolkata Airport ranks fifth in the list of the busiest airports in India. The number of people using the airport has consistently increased over the last few years. There is a flying club in Behala. After several years of inactivity, it has been restored. It is the oldest flying institute on the country. Seaport Kolkata is a major riverine