Transport in Argentina is mainly based on a complex network of routes, crossed by relatively inexpensive long-distance buses and by cargo trucks. The country also has a number of national and international airports. The importance of the long-distance train is minor today, though in the past it was widely used and is now regaining momentum after the re-nationalisation of the country’s commuter and freight networks. Fluvial transportation is mostly used for cargo.Within the urban areas, the main transport system is by the bus or colectivo; bus lines transportation millions of people every day in the larger cities and their metropolitan areas as well as a bus rapid transportation system known as Metrobus. Taxis are very common and relatively accessible price-wise. They have different colours and fares in different cities, though a highly contrasted black-and-yellow design is common to the largest conurbations. Call-taxi companies (radio-taxis) are very common, while the remisse is another form of hired transportation: they are very much like call-taxis, but do not share a common design, and trip fares are agreed beforehand instead of using the meter. Although, there are often fixed prices for common destinations.