Although transport and communications were seriously neglected in the past, there has been a concerted effort to remedy this situation. A four-lane auto-estrada (superhighway) now connects Lisbon to Porto, the capital of the North, and similar routes are being constructed from Porto and Lisbon to Spain. Highways connect the largest towns and extend to the border and ports. Secondary roads link the towns with almost every part of the interior and several of the country's main roads date to ancient times. The Portela Airport at Lisbon, an important junction for intercontinental flights, is the base of the Portuguese airline Transportes Aéreos Portugueses (TAP), which provides schedule services. Important secondary airports are located at Porto and Faro.