<P> All taxi services are licensed by the RTA . Dubai licensed taxis are easily identifiable by their cream bodywork colour and varied roof colours identifying the operator . Dubai Taxi Corporation, a division of the RTA, is the largest operator and has taxis with red roofs . There are five private operators: Metro Taxis (orange roofs); Network Taxis (yellow roofs); Cars Taxis (blue roofs); Arabia Taxis (green roofs); and City Taxis (purple roof). In addition, Dubai Taxi Corporation has a Ladies Taxi service, with pink roofs, which caters exclusively for female passengers, using female drivers . The Dubai International Airport taxi concession is operated by Dubai Taxi Corporation . There are more than 3000 taxis operating within the emirate making an average of 192,000 trips every day, carrying about 385,000 persons . In 2009 taxi trips exceeded 70 million trips serving around 140.45 million passengers . </P> <P> Dubai International Airport (IATA: DXB), the hub for Emirates and flydubai, serves the city of Dubai and other emirates in the country . The airport was the 3rd busiest airport in the world by passenger traffic handling 83.6 million passengers in 2016 . The airport is also the busiest airport in the world by international passenger traffic . In addition to being an important passenger traffic hub, the airport is the 7th busiest cargo airport in world, handling 2.37 million tons of cargo in 2014 Emirates is the national airline of Dubai . As of 2018, it operated internationally serving over 150 destinations in over 70 countries across six continents . </P> <P> The development of Al Maktoum International Airport (IATA: DWC) was announced in 2004 . The first phase of the airport, featuring one A380 capable runway, 64 remote stands, one cargo terminal with annual capacity for 250,000 tonnes of cargo and a passenger terminal building designed to accommodate five million passengers per year, has been opened . When completed, Dubai World Central - Al Maktoum International will be the largest airport in the world with five runways, four terminal buildings and capacity for 160 million passengers and 12 million tons of cargo . </P> <P> The $3.89 billion Dubai Metro project is operational . It consists of two lines (Red line and Green line) which run through the financial and residential areas of the city . The Metro system was partially opened on September 2009 . UK - based international service company Serco is responsible for operating the metro . The metro comprises the Green Line, which has 20 stations (8 underground, 12 elevated) and runs from the Etisalat Station to the Creek Station and the Red Line, the major back bone line, which has 29 stations (4 underground, 24 elevated and 1 at ground level) and runs from Rashidiya Station to UAE Xchange Station Jebel Ali . In July 2016 a contract was awarded to add a branch to the Red Line running to the EXPO 2020 site; this extension is due to open in April 2020 . A Blue and a Purple Line have also been planned . The Dubai Metro (Green and Blue Lines) will have 70 km (43.5 mi) of track and 43 stations, 37 above ground and ten underground . The Dubai Metro is the first urban train network in the Arabian Peninsula . All the trains run without a driver and are based on automatic navigation . </P>

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