A2 motorway (Portugal) Wikipedia
The A2 (Portuguese: Autoestrada do Sul) is a major motorway (freeway) in Portugal. It connects 25 de Abril Bridge (Lisbon, the capital of Portugal), to Albufeira in the Algarve, the country's southern-most mainland province. The first section of the A2 was opened in 1966 and the last one was completed in 2002. It extends for fractionally more than 240 km (149 miles). The A2 is operated by Brisa - Auto-estradas de Portugal.
Sections of the road carry very little traffic.