page_title: Roads in Portugal
section_title: Complementary routes
hierarchical_section_title: Roads in Portugal / Current classification according PRN 2000 / Complementary routes
caption_attribution_description: IC 17 (CRIL) in Lisbon
context_page_description: Roads in Portugal are defined by the Plano Rodoviário Nacional, which describes the existing and planned network of Portuguese roads. The present plan in force is the 2000 National Road Plan, approved in 1998. It replaced PRN 1985, which itself had replaced PRN 1945.
  The Portuguese road infrastructure was considered the best in Europe and the second best in the world by the World Economic Forum in its Global Competitiveness Report for 2014–2015. In the 2017–2018 report it was considered to 8th best in the world. Nevertheless, all of these data was obtained through nothing more than an opinion survey to selected business executives.
  The scenic road between Peso da Régua and Pinhão, in Trás-os-Montes region, was considered the world's best driving road, accordingly to the Avis Driving Index. This road is a section of the N 222 which follows the Douro Valley.
context_section_description: There are 37 itinerários complementares (complementary routes), signalized by the letters IC, designated IC1 through IC37.
  Note: Italics and -**- refers to unbuilt sections.
caption: IC17 is a dual carriageway highway that encircles Lisbon. Legally, it is included in the motorway network of the 2000 National Road Plan, but the road is not signalized as such.
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