Transportation
Bogotá's growth has placed a strain on its roads and highways, but within the past decade significant efforts to upgrade the infrastructure have been undertaken. Private car ownership, despite being under 27%, forms a major part of the congestion, in addition to taxis, buses and commercial vehicles. Buses remain the main means of mass transit. There are two bus systems: the traditional system and the TransMilenio. The traditional system runs a variety of bus types, operated by several companies on normal streets and avenues: Bus (large buses), Buseta (medium size buses) and Colectivo (vans or minivans). The bigger buses were divided into two categories: Ejecutivo, which was originally to be a deluxe service and was not to carry standing passengers, and corriente or normal service. Since May 2008, all buses run as corriente services. Bogotá is a hub for domestic and international bus routes. The Bogotá terminal serves routes to most cities and towns in Colombia and is the largest in the country. There is international service to Ecuador, Perú and Venezuela.
The TransMilenio rapid transit system, created during Enrique Peñalosa's mayoral term, is a form of bus rapid transit that has been deployed as a measure to compensate for the lack of a subway or rail system. TransMilenio combining articulated buses that operate on dedicated bus roads (busways) and smaller buses (feeders) that operate in residential areas, bringing passengers to the main grid. TransMilenio's main routes are: Caracas Avenue, Northern Highway (Autopista Norte), 80th Street, Americas Avenue, Jiménez Avenue, and 30th Avenue (also referred to as Norte Quito Sur or N.Q.S. for short). Routes for Suba Avenue and Southern Highway (Autopista Sur), the southern leg of the 30th Avenue, were opened in April 2006. The third phase of the system will cover 7th Avenue, 10th Avenue, and 26th Street (or Avenida El Dorado). The system is planned to cover the entire city by 2030. Although the Transmilenio carries commuters to numerous corners of the city, it is more expensive than any public transport except taxis, and fares increase with petroleum fuel prices. As of July 2009 the price of a ticket was C$1500 (about US$0.75); however, a single ticket allows unlimited transfers until the passenger leaves the system, and passengers travel on feeder routes for free. Transmilenio does not yet cover some main routes, and buses are overcrowded.
Despite the city's chronic congestion, many of the ideas enacted during the Peñalosa years are regarded worldwide to be cost-effective, efficient and unique solutions. In addition to TransMilenio, the Peñalosa administration and voter-approved referenda helped to establish travel restrictions on cars with certain licence plate numbers during peak hours called Pico y placa; "Car Free Days" on Sundays; a massive system of bicycle paths and segregated lanes called ciclorrutas; and the removal of thousands of parking spots in an attempt to make roads more pedestrian-friendly. Ciclorrutas is one of the most extensive dedicated bike path networks of any city in the world, with a total extension of 303 km. It extends from the north of the city, 170th Street, to the south, 27th Street, and from Monserrate on the east to the Bogotá River on the west. The ciclorruta was started by the 1995-1998 Antanas Mockus administration, and considerably extended during the administration of Mayor Peñalosa. Since the construction of the ciclorruta bicycle use in the city has increased.
Airports
Bogotá's principal airport is El Dorado International Airport, west of the city's downtown, at the end of Avenue El Dorado. Due to its central location in Colombia and in Latin America, it is a hub for domestic and international airlines.
El Dorado is heavily congested, as it handles more passengers than its optimal capacity. Work on a major expansion of El Dorado airport started in September 2007. When completed, this will expand capacity from the current 8 million passengers a year to 25 million.
A secondary airport, Catam, serves as a base for Military and Police Aviation; there is also Guaymaral Airport, for private aviation activities.