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Roads in Portugal
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Roads in Portugal

Roads in Portugal are defined by the Plano Rodoviário Nacional (PRN, English: National Road Plan), which describes the existing and planned network of Portuguese roads. The present plan in force is the 2000 National Road Plan (PRN 2000), 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.[1] In the 2017-2018 report it was considered to 8th best in the world.[2] Nevertheless, all of these data was obtained through nothing more than an opinion survey to selected business executives.[3]

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.[4] This road is a section of the N 222 which follows the Douro Valley.

A8 motorway, near Malveira

History of road classification in Portugal

First road plans

Section of the old road between Aveiro and Vilar Formoso. Completed in the 1930s as the National Road No. 8 of 1st class (EN 8-1ª), it became the National Road No. 16 (N 16) under PRN 1945. For decades, this was the most-direct road link between Portugal and the rest of Europe.
Section of the N 16 in Oliveira de Frades paved in granite blocks which was typical of the original national roads in Portugal.

The first road plans in Portugal date back from 1843 and 1848, and were based on 18th century plans which prioritized connections between Lisbon and strategic points of the country, and as a support for fluvial routes.[5] The planned network was classified in 1850 into estradas (roads) and caminhos (paths), with the estradas being classified as 1st and 2nd class. Caminhos were routes of mere local interest.[6]

In 1862, the existing and planned roads were classified as 1st class roads or estradas reais (royal roads), 2nd class roads or estradas distritais (district roads) and estradas municipais (municipal roads). The estradas reais were those with direct or indirect (via railways, for instance) origin in Lisbon and were managed by the State. The estradas distritais were managed by the districts while estradas municipais were managed by the municipalities.[7]

With the abolition of the monarchy in 1910, the estradas reais were renamed estradas nacionais (national roads).

In 1913, the Law of 22 February established a commission to study a new classification of the roads and propose guidelines to establish that classification. However, despite these efforts, many routes were not clearly classified and the condition of most roads was chaotic. Widespread use of the automobile in the 1920s created new pressure for reforming the Portuguese road network.

In 1926, under the Ditadura Nacional regime, a provisional General Plan of National Roads of 1st and 2nd class was established by Decree No. 12,100 of 31 July 1926, accordingly to what was previewed by the Law of 22 February 1913.[8] Both the 1st and 2nd class roads would be designated estradas nacionais, with the term estrada distrital disappearing. They were designated EN xx-x (for estradas nacionais followed by the number of the road and its class). This plan established 23 roads of 1st class (designated EN 1-1ª to EN 23-1ª) and 112 roads of 2nd class (designated EN 1-2ª to EN 112-2ª).[8] The definite General Plan of National Roads was approved by Decree No. 16,075 of 30 September 1928.[9] It kept the 23 1st class roads and the 112 2nd class ones, but some roads were rerouted, extended or truncated.

The 1st class national roads included in the 1928 General Plan of National Roads were the following:[9]

Number Route Length
 EN 1-1ª  Porto - Viana do Castelo - the margin of Minho river - São Gonçalo border ?
 EN 2-1ª  Porto - Braga - Monção ?
 EN 3-1ª  Viana do Castelo - Lindoso (border) ?
 EN 4-1ª  Viana do Castelo - Braga - Bragança - Bridge over Maçãs river (border) ?
 EN 5-1ª  Braga - Guimarães - Amarante - Vila Real - Bragança - França (border) ?
 EN 6-1ª  Porto - Penafiel - Régua - Barca de Alva ?
 EN 7-1ª  São Pedro do Sul - Vila Real - Chaves - border ?
 EN 8-1ª  Aveiro - Viseu - Guarda - Almeida - Vilar Formoso (border) ?
 EN 9-1ª  Buarcos - Figueira da Foz - Coimbra - Moncorvo - Podence ?
 EN 10-1ª  Porto - Coimbra - Leiria - Caldas da Rainha - Loures - Lisboa ?
 EN 11-1ª  Malveira - Ericeira - Sintra - Cascais - Algés (Lisboa) ?
 EN 12-1ª  Lisboa - Santarém - Castelo Branco - Salvaterra do Extremo (border) ?
 EN 13-1ª  Barreiro - Aldeia Galega - Almeirim - Barreiras do Tejo (Abrantes) ?
 EN 14-1ª  Torres Novas - Abrantes - Proença-a-Nova ?
 EN 15-1ª  Guarda - Castelo Branco - Portalegre ?
 EN 16-1ª  Peniche - Santarém - Coruche - Évora ?
 EN 17-1ª  Fronteira - Portalegre - Évora - Beja
 EN 18-1ª  Aldeia Galega - Vendas Novas - Elvas - Bridge over Caia river (border) ?
 EN 19-1ª  Cacilhas - Setúbal - Alcácer do Sal - Ferreira do Alentejo - São Brás de Alportel - Faro ?
 EN 20-1ª  Alcácer do Sal - Grândola - Odemira - Lagos ?
 EN 21-1ª  Sines - Ferreira do Alentejo - Moura - Rosal da Cristina (border) ?
 EN 22-1ª  Odemira - Ourique - Mértola - Mina de São Domingos ?
 EN 23-1ª  Lagos - Faro - Vila Real de Santo António ?

By the Law No. 3,969 of 20 July 1927, the Junta Autónoma das Estradas (JAE, English: Autonomous Road Board) was created in order to study the condition of the Portuguese road network. The preliminary report was clear to state that from the 16,000 kilometres (9,900 mi) of the planned national road network, 4,000 km (2,500 mi) were to be completed and from the 12,000 km (7,500 mi) already built, 10,000 km (6,200 mi) were in an almost-ruined condition.[10]

In 1933, roads were reclassified as estradas nacionais (1st and 2nd class), estradas municipais and caminhos públicos (public paths), with the latter two under municipal management.[11]

1945 National Road Plan

N12 is an Oporto ring road, and a first-class National Road according PRN 1945. It is to be converted in a boulevard.
N122 (Beja-Vila Real de Santo António) was a 1st-class National Road.
N217 is a 2nd-class National Road in Trás-os-Montes e Alto Douro.

In 1933, the entire (i.e. built and planned) network of national roads totalled 16,900 km (10,500 mi).[12] The state recognized the importance of the road network and, in 1945, created the first real national road plan, the Plano Rodoviário Nacional de 1945 (PRN 45), defined in Law No. 34,593 of 11 May 1945. This plan comprised a national road network of 20,597 km (12,798 mi).[13][14]

PRN 1945 classified the national road network in Rede Fundamental (Fundamental Network) and Rede Complementar (Complementary Network). The latter served to support the fundamental network. Roads were classified according to the following:

  • Fundamental Network: Estradas nacionais (EN or N)
    • 1st class roads:
      • Principal routes (itinerários principais):  N 1  to  N 18 
      • Other 1st-class roads:  N 101  to  N 125 
    • 2nd-class roads:
      •  N 201  to  N 270 
  • Complementary Network: Estradas nacionais (EN or N)
    • 3rd-class roads:
      •  N 301  to  N 398 
      •  N X-Y . Branch roads, emerging from a determined road, which was identified in the X factor, with a number of order according to point of origin, identified in the Y factor. The road with most branch roads was  N 1 , originally with 16 roads (  N 1-1  to  N 1-16 . In 1961  N 1-1  and  N 1-2  were renamed as  N 10-7  and  N 10-6 , respectively. However, later  N 1-17  and  N 1-18  were created, so N 1 recovered the record for 16 branch roads). These roads were planned to cover distances rarely longer than 20 km (12 mi), in order to close some road grids, connecting locals of some demographic importance which are not covered by the "mother" road, less important border crossings, railway stations and sea ports. There were 438 branch roads.

The National Roads Statutes were subsequently approved in 1949.[15]

In 1961, separate legislation (Law No. 2110 of 19 August 1961)[16] on municipal roads defined new guidelines on construction, maintenance and commercialization of these roads, and those were classified as following:

  • Estradas municipais (EM or M):[17]
    •  M 501 -  M 999 , following a district sequence, so the sequence 501 and over was repeated in every district. Municipal Roads could have also Branch Roads, following the same rules as for National Roads
  • Caminhos públicos or, from 1961,[18] caminhos municipais (CM)
    •  CM 1001  and on, with the same numbering rules as Municipal Roads

The Main Roads could be, by law, upgraded to 4 lanes with central separation, if necessary. In fact this happened before PRN 1945, with the N7 motorway (now the A5) between Lisbon and the National Stadium completed in 1944, and in 1961 with the first 25 km (16 mi) of N1 motorway (now A1) between Lisbon and Vila Franca de Xira. The first urban highways were built in the 1960s. Nevertheless, most motorways built before 1985 had no number at all.

The road classes were distinguished using colour codes: red for 1st class, blue for 2nd class, green for 3rd class, yellow for municipal roads and brown for municipal paths. These colours were applied as the basis of the location markers and occasionally in the background of the road numbers. The numbering distribution for main roads was according to the importance of its route in the network, and for N101 and over were numbered in a north-to-south fashion.

The length of the roads had no relation with its class (except for branch roads, which were usually short), with existing 3rd-class roads longer than 100 km (62 mi), and main roads with as short as 8 km (5.0 mi), like the N7 highway, now part of A5. The longest road of the 1945 Plan was N2, connecting Chaves to Faro, extending for 738 km (459 mi).

According PRN 1945, there were 18 Main Roads, designated N1 through N18.

Number Route Length Notes
 N 1  Lisbon - Vila Franca de Xira - Leiria - Pombal - Coimbra - Albergaria-a-Velha - Porto (northern end of upper deck of D. Luís Bridge) Originally about 320 km (200 mi);
307 km (191 mi) between Lisbon and the northern end of Av. da República in Vila Nova de Gaia
On the 1945 National Roadway Plan, this was Portugal's main road, connecting Lisbon and Oporto. Originally crossing the towns or city centres on its route, over the years many bypass roads have been built to avoid urban traffic.

In 1961, the new motorway section between Lisbon and Vila Franca de Xira, part of the future Lisbon-Oporto Motorway, was integrated into the N1. The original route became an extension of the N10. The N1 classification for the referred branch of A1 had been kept until 1985, thereafter the N1 road had its starting point at the level of km 26.

Also during the 1960s, a more direct and straight connection between Venda das Raparigas (Benedita, Alcobaça) and São Jorge (Porto de Mós) has been built. The original route was reclassified, in 1973, as N 8-6 (Venda das Raparigas-Alcobaça, or more properly Alcobaça-Venda das Raparigas) and N 8 (Alcobaça-vicinity of São Jorge), thus extending its route farther north.

According to PRN 1985, most parts of this road have been included on IC2, signed as IC2/N1. Some sections which aren't common with IC2 are intended for local traffic, or are parts parallel to auto-estrada sections of IC2.

 N 2  Chaves - Vila Real - Viseu - Penacova - Abrantes - Ponte de Sor - Montemor-o-Novo - Ferreira do Alentejo - Almodôvar - Faro 738 km (459 mi) The longest road of Portugal according to 1945 National Roadway Plan, connecting north to south, "cutting" the country halfway between west and east and crossing eleven of the eighteen districts of Portugal. In Trás-os-Montes and Viseu district N2 crossed district capitals (Vila Real and Viseu) and medium-sized cities (Chaves and Lamego) but south of that regions (i.e. roughly for the remaining 500 km), the road ran far from any major city until near its end in Faro. N2 never had an autonomous traffic that justified its importance in the 1945 Plan and the long national road became a sequential collection of regional sections.[19] The failure of N2 proved that the major link between the Northern and Southern regions of Portugal should always cross Lisbon area (as happens nowadays with IP1 and IC1).[19] In the 1985 and 2000 National Road Plans, IP3 (a single- or dual-carriageway highway) runs parallel to N2 in Trás-os-Montes and Viseu district, but south of that no major road follows the former N2 axis. Currently, almost all sections of N2 have been downgraded to regional or municipal roads.

The route classified as N2 by 1945 had been fully asphalted from the 1930s to 1944.

Many branches had been replaced in importance by the 1985 Plan's IP routes, some renamed as Estrada Regional (R 2), some were municipalized and some classified as historical patrimony.

Due to its characteristics, N2 is nicknamed Portuguese Route 66.

In November 2015, a trans-regional project called Rota da Estrada Nacional 2 had been signed by eleven of the thirty-six municipalities along its route (although all municipalities will be part of the project). It aims to promote the past part of Portugal's inland crossed by the road for its importance to tourism, culture and gastronomy.[20]

 N 3  Carregado (N1) - Santarém - Torres Novas - Vila Velha de Rodão - Castelo Branco (N18) 213 km (132 mi) It was the most-direct connection between Lisbon (Carregado is located at km 33 of N 1) and the most-important cities of the former provinces of Ribatejo, Beira Baixa and Beira Alta, the latter through N18, which this road meets in Sernadas do Ródão.
 N 4  Montijo - Vendas Novas - Estremoz - Elvas - Caia 182 km (113 mi);
194 km (121 mi) projected
The original project of this road included a bridge over the Tagus River, in order to directly connect Lisbon with Alentejo and the border of Caia, near Badajoz, where it would meet the Spanish N-V.

The bridge was never built and this road starts at the level of km 12.

 N 5  Montijo - Marateca - Alcácer do Sal - Barragem do Vale de Gaio - N2 87 km (54 mi) Projected to connect the Lisbon region into the south of Portugal, through N2, which this road would meet in Torrão; later it was decided that this road would run through Vale do Gaio Dam.

The connection between Vale do Gaio Dam and N2 was never built, but the route through Torrão was built and reclassified as N5-2.

 N 6  Lisbon - Paço de Arcos - Parede - Estoril - Cascais 25 km (16 mi) The famous seaside Road of Cascais/Estoril Coast, also known as Avenida Marginal on most of its route. It is designed as a four lane, two in either direction. This road was projected to include the former Lisbon ringroad on its route.
 N 7  Lisbon - National Stadium 8 km (5.0 mi) Original name of the A5, the first Portuguese motorway, inaugurated in 1944. It was only extended into Cascais in 1991, when it became known as A5.
 N 8  Lisbon - Loures - Torres Vedras - Óbidos - Caldas da Rainha - Alcobaça - Cruz da Légua - IC2 / N1 131 km (81 mi) Connects Lisbon to the West Region. Originally this road ended in Alcobaça, meeting there N 1 (see N 1 for details).
 N 9  Cascais (N6) - Sintra - Torres Vedras - Alenquer (N1) 98 km (61 mi) Crosses the northern region of Lisbon. Along with N 6 (Lisbon-Cascais), N 1 (Alenquer-Vila Franca de Xira), N 10 (Vila Franca de Xira-Lisbon) and the riverside streets of Lisbon, it forms a ring road around the Lisbon region.
 N 10  Almada - Setúbal - Vila Franca de Xira - Lisbon 141 km (88 mi) A ring road that connects the south bank of Tagus to Lisbon, via Marechal Carmona Bridge (Vila Franca de Xira).

From 1961, it classified the original route of N1 between Vila France de Xira and Lisbon.

 N 11  Montijo - Barreiro 10 km (6.2 mi);
32 km (20 mi) projected
Short-distance road in the south bank of Tagus. The original plan included a connectiton from Barreiro to Trafaria which was never built.

It was renamed as R11.

 N 12  Matosinhos - Rio Tinto 17 km (11 mi) Oporto ring road, to be converted into a boulevard.
 N 13  Porto - Viana do Castelo - Valença 115 km (71 mi) Road crossing the northwest region of Portugal, with an almost seaside route.

The first 5 km (3.1 mi) of this road, shared with N14, had been upgraded into a dual carriageway in the 1970s and are known as Via Norte.

 N 14  Porto - Braga 56 km (35 mi) The first 5 km of this road, shared with N13, had been upgraded into a dual carriageway in the 1970s and are known as Via Norte.
 N 15  Ermesinde - Amarante - Vila Real - Mirandela - Bragança 240 km (150 mi) The main road from Oporto to the region of Trás-os-Montes e Alto Douro, until the construction of IP4.
 N 16  Aveiro - Viseu - Guarda - Vilar Formoso 224 km (139 mi) Connects Aveiro to the most-important border with Spain.

From the 1970s, the road was considered obsolete due to several kilometres of congested traffic on the approach to the border. As an alternative IP5 was built between 1983 and 1991, but this road proved to be highly dangerous and was converted into an autoestrada, also known as A25.

 N 17  Coimbra - Celorico da Beira (N16) 131 km (81 mi) Connects Coimbra with the Beira Alta region, crossing the outskirts of Serra da Estrela.

Popularly known as Estrada da Beira.

 N 18  Guarda - Castelo Branco - Portalegre - Estremoz - Évora - Beja - Ourique - Ervidel (N2) 380 km (240 mi) Crosses the most important cities in the far east of Portugal, connects with N 2 in Ervidel.

Many branches were included on IP2.

1985 National Road Plan

The A22 motorway, in the Algarve, was originally signalized as IP1. During the 1980s and 1990s, only tolled highways were typically signed Axx, while the other highways were signalized as IPxx or ICxx.

From the 1960s, many routes were assumed to be somewhat outdated, so in 1972, Brisa was created to manage a projected network of motorways, which by that time didn't reach an extension of 100 km (62 mi). New sections of motorways were then built in the 1970s and the early 1980s, like the Vila Franca de Xira-Carregado (1977), Carregado-Aveiras de Cima (1980), Condeixa-a-Nova-Mealhada (1982, which permitted bypassing the city centre of Coimbra), Santa Maria da Feira-Carvalhos (1980) and Albergaria-a-Velha-Santa Maria da Feira (1983) sections; these would become part of the A1 motorway and the extension of the A2 motorway into Setúbal (between 1978 and 1979).

However, the whole road network was seen to be increasingly inadequate to properly serving the whole country. While Portugal was preparing to enter the EEC, the replacement for PRN 1945 was created by the Law 380/85 of 25 September 1985, the Plano Rodoviário Nacional de 1985 (English: 1985 National Roadway Plan) or PRN 1985.

The road network would again comprise the Rede Fundamental (English: Fundamental Network), composed of nine itinerários principais (principal routes), designated IP1 through IP9, which totalized 2,635 km (1,637 mi).

The non-motorway sections of the itinerários principais started to be identified with green background direction signs and green background IPx road numbers. In the late 1990s, although the background of the direction signs continued to be green, the IPx road numbers started to be put on red background rectangles.

The itinerários principais were set to be of restricted access, forbidding pedestrian, animal and bicycle traffic, but exceptions could be accepted, especially for sections resulting from the reclassification of former national roads into IP network.

Such a classification was proposed before the publication of PRN 1985.[21] In the early 1980s the first branches of the future IP routes were built. These were a 12 km (7.5 mi) loop road alternative to N16 between Mangualde and Prime (Viseu) for IP5 route, built in 1983, and another branch built in 1981 which was integrated on the N2 route but later became part of IP3, between Oliveira do Mondego and Chamadouro when Aguieira Dam was built.

The road network also included the Rede Complementar (Complementary Network) of 24 itinerários complementares (IC, English: complementary routes) and other roads. The "other roads" were the former PRN 1945 national roads not set to be transformed into IP or IC, neither set for declassification from the national road network. In practice, the "other roads" continued to be signed as estradas nacionais (N or EN). The Complementary Network was 4,807 km (2,987 mi) long.

The non-motorway roads of the Rede Complementar were signed with white background direction signs.

The PRN 1985 established 24 itinerários complementares, designated IC1 through IC24, which totalled 2,439 km (1,516 mi):

No. Route Length (km)
 IC 1  Lisbon - Torres Vedras - Caldas da Rainha - Leiria - Figueira da Foz - Aveiro - Ovar - Espinho - Porto - Póvoa de Varzim - Viana do Castelo - Valença 450
 IC 2  Lisbon - Rio Maior - Leiria - Coimbra - Mealhada - São João da Madeira - Argoncilhe - Porto 330
 IC 3  Setúbal - Palmela - Montijo - Salvaterra de Magos - Almeirim - Entroncamento - Tomar - Penela - Condeixa- Coimbra (IP3) 235
 IC 4  Sines - Lagos - Portimão - Faro ?
 IC 5  Póvoa de Varzim (IC1) - Famalicão - Guimarães - Fafe - Vila Pouca de Aguiar - Murça - Vila Flor - Alfândega da Fé - Mogadouro - Miranda do Douro (border with Spain) 131
 IC 6  Santa Comba Dão (IP3) - Venda de Galizes - Seia - Gouveia -Celorico da Beira (IP5) ?
 IC 7  Coimbra - Penacova - Venda de Galizes - Covilhã (IP2) ?
 IC 8  Figueira da Foz (IC1) - Pombal (IP1) - Figueiró dos Vinhos - Pedrógão Grande - Sertã - Proença-a-Nova - Castelo Branco - Segura (IP2) 118
 IC 9  Alcobaça - Nazaré - Marinha Grande - Leiria - Ourém - Tomar ?
 IC 10  Santarém (IP 1) - Almeirim - Coruche - Montemor-o-Novo - Estremoz (IP8) 151
 IC 11  Torres Vedras - Vila Franca de Xira - Pegões - Marateca (IP1) 53
 IC 12  Viseu (IP5) - Seia (IC6) - Covilhã (IP2) ?
 IC 13  Coina (IP7) - Montijo (IP1) - Coruche - Mora - Ponte de Sor - Alter do Chão - Crato - Portalegre ?
 IC 14  Barcelos - Braga ?
 IC 15  Lisbon - Oeiras - Cascais 25
 IC 16  Lisbon (CRIL - IC17) - Amadora - Belas - Alto Colaride - Sintra - Cascais 27
 IC 17  Algés - Buraca - Olival de Basto - Sacavém (IP1) 21
 IC 18  Caxias (IC15) - Queluz - Loures - Alverca (IP 1) 35
 IC 19  Coina - Montijo - Alcochete ?
 IC 20  Almada - Costa da Caparica 6
 IC 21  Coina - Barreiro 7
 IC 22  Olival Basto (IC17) - Montemor (CREL - IC18) 4
 IC 23  Ponte da Arrábida - Avenida de Fernão de Magalhães - Ponte de Freixo - Avenida da República - IC1 21
 IC 24  Oporto (IC23) - Matosinhos - Moreira (IC1) ?

The whole network totalled 9,881 km (6,140 mi), with about 12,000 km (7,500 mi) of old PRN 1945 roads being declassified from the national road network.

As the PRN 1985 focused mainly on new roads to be built, no clear rules were established for a procedure regarding the old roads that were to be declassified. In practice, most of them continued to be managed by the national road agency, JAE, and continued to be designated estradas nacionais. Some of them were transferred to the management of local municipalities.

Until the early 1980s, the Portuguese motorways did not have a proper number, each being referred to by a name (with some sections that were part of an estrada nacional also using the respective Nxx number). The existing motorways at that time (all of them managed under concession) started to receive a proper numbers of the type Axx. With the application of the PRN 1985, new motorways were built with a few of them being managed directly by JAE and not under concession like the majority. So, although all motorways were part of an IP or IC, only concessionated ones received the Axx number (whether tolled or not). This number was signalized and the IPxx or ICxx number was disused in the motorway signage. The other motorways - non-concessionated, and therefore, always non-tolled - were signalized with the IPxx or ICxx number. Until the 2000s, almost all motorways under concession were tolled, so during that period a signed Axx number helped drivers know in advance whether a motorway was tolled.

All motorways were signed with blue background direction signs, independently of being part of the Rede Fundamental or the Rede Complementar.

In 1993, the reclassification of 600 km (370 mi) of roads in the IC network and about 1,700 km (1,100 mi) into other roads was proposed, but the optimizations of PRN 1985 were only realized with PRN 2000, which was initially proposed in 1996.

2000 National Road Plan

Typical signage of an autoestrada (left) and a non-highway IP road (right).

In spite of its name, Plano Rodoviário Nacional de 2000 (English: 2000 National Road Plan) or PRN 2000 was approved in 1998 and was published by Law No. 222/98 of 17 July 1998. This was essentially an optimization of the previous PRN 1985, with the addition of about 1,500 km (930 mi) of roads into the National Network, and the creation of the Rede Regional (Regional Network) of about 5,000 km (3,100 mi) of roads, as well as the identification of a Rede Nacional de Autoestradas (National Motorway Network), that, however, overlapped with the IP and IC network. The plan includes 16,500 km (10,300 mi) of roads.

The so-called "other roads" of the PRN 1985 disappeared from the PRN 2000, with the designation estradas nacionais becoming official again. A new kind of road, the estradas regionais (regional roads) was also introduced.

The Road Network is defined as following:

  • Fundamental Network:
    • Itinerários principais 2,600 km (1,600 mi)
  • Complementary Network:
    • Itinerários complementares 3,016 km (1,874 mi)
    • Estradas nacionais 5,513 km (3,426 mi)
  • Regional Network:
    • Estradas regionais (sections of former estradas nacionais, which take the same numbering, i.e. ER 2 is a section of EN 2, if the road crosses more than one region, separate sections of the former National Road can be part of the Regional Network) c.5,000 km (3,100 mi)
  • Rede Nacional de Autoestradas (National Highway Network)
    • Autoestradas (always part of IP and IC network)

It should be noted that IP and IC roads may have other designations, especially those integrated in the National Highway Network, where the "A" designation is preferred on traffic signage, except for some city or suburban highways.

Since its approval, the PRN 2000 was updated twice (in 1999 and in 2003).

Current classification according PRN 2000

Motorways

Autoestrada is the Portuguese-language word for "motorway" or "freeway." Portugal has about 3,000 km (1,900 mi) of motorways,[22] crossing all the coast and connecting the main inland cities and towns. Several autoestradas are linked with the Spanish motorway system and, through Spain, to the rest of Europe.

During the 1990s and early 2000s, Portugal was the country with the greatest development in the motorway network in the European Union. It had 316 km (196 mi) of motorways in 1990 and the number increased to 1,242 km (772 mi) by 1999 and 2,100 km (1,300 mi) by the end of 2007.[23]

Although administratively a separate motorway network exists, in practice each autoestrada overlaps part or all of an IP (Itinerário Principal or Main Itinerary) or an IC (Itinerário Complementar or Complementary Itinerary).[24] These are designated with an "A" code as well as an IP or an IC code, though they are typically only signalized by the A designation. In addition, many of these roads are part of the European road network, and so also carry an "E" designation, which may serve as reference for non-Portuguese drivers.

Number Designation Route IP/IC Length Construction Concessionaire
 A 1  Autoestrada do Norte Lisbon - Santarém - Leiria - Coimbra - Aveiro - Porto  IP 1  (Lisbon - Carvalhos)
 IP 6  (Santarém/  A 15  - Torres Novas/  A 23 
 IC 1  (  A 29  interchange - Porto)
 IC 2  (Carvalhos - Arrábida-Porto)
 IC 23  (Coimbrões-Gaia/  A 44  - Arrábida-Porto/  A 28 )
303 1960-1991 Brisa
 A 2  Autoestrada do Sul Lisbon / Ponte 25 de Abril - Marateca - Alcácer do Sal - Grândola - Ourique - Albufeira  IP 1  (Palmela/  A 12  - Albufeira)
 IP 7  (Lisbon - Marateca/ A 6 - A 13 )
240 1966-2002 Lusoponte (25 de Abril Bridge), Brisa
 A 3  Autoestrada do Minho Porto - Famalicão - Braga - Ponte de Lima - Valença  IP 1 
 IP 9  (Ponte de Lima/  A 27  - Braga/  A 11 )
112 1989-1998 Brisa
 A 4  Autoestrada Transmontana Porto - Penafiel - Amarante - Vila Real - Mirandela - Bragança - Quintanilha  IP 4 
 IP 9  (Castelões/  A 11  - Vila Real)
223 1990-2016 Ascendi
Brisa
Infraestruturas de Portugal
AEXXI
 A 5  Autoestrada do Estoril Lisbon - Oeiras - Cascais  IC 15  25 1944-1991 Brisa
 A 6  Autoestrada do Alentejo Marateca - Évora - Estremoz - Elvas - Caia  IP 7  159 1995-1999 Brisa
 A 7  Autoestrada do Alvão Vila do Conde - Famalicão - Guimarães - Fafe - Vila Pouca de Aguiar  IC 5  100 1994-2007 Ascendi
 A 8  Autoestrada do Oeste Lisboa - Caldas da Rainha - Leiria - A1  IC 1  (Lisbon - Marinha Grande/  A 17 )
 IC 17-CRIL  (Km 0-km 2)
 IC 36  (Marinha Grande/  A 17  - Leiria/  A 1 )
138 1984-2011 AE do Atlântico
 A 8-1  Circular Oriental de Leiria (COL) Pousos (  A 8 /  A 1 ) -  IC 2  3 1990s as COL
 A 9  Circular Regional Exterior de Lisboa Caxias (National Stadium) - Queluz - Loures - Alverca  IC 18  35 1994-1995 Brisa
 A 10  Autoestrada do Ribatejo Bucelas - Arruda dos Vinhos - Carregado - Benavente  IC 2  (Bucelas/  A 9-CREL  - Carregado)
 IC 11  (Carregado - Benavente/  A 13 )
40 2003-2007 Brisa
 A 11  Apúlia - Braga - Guimarães - Penafiel  IC 14  (Apúlia/  A 28  - Braga/  A 3 )
 IP 9  (Braga/  A 3  - Castelões/  A 4 )
80 1998-2006 Ascendi
 A 12  Lisbon / Ponte Vasco da Gama - Montijo -Setúbal  IP 1  (Lisbon - Palmela/  A 2 )
 IC 3  (Montijo - Setúbal)
41 1979-1998 Lusoponte (Vasco da Gama Bridge), Brisa
 A 13  Marateca - Benavente - Salvaterra de Magos - Almeirim -**- Chamusca -**- Golegã -**- Vila Nova da Barquinha -(to be upgraded into dual carriageway)-  A 23  - Tomar - Avelar - Condeixa - Coimbra  IC 3  (Coimbra - Canha/  A 33 )
 IC 11  (Benavente/  A 10  - Marateca/  A 2 -  A 6 )
163
(206)
2002-? Brisa (Almeirim-Marateca), Ascendi (A23-Coimbra)
 A 13-1   A 1  - Condeixa -  A 13  10 2012 Ascendi
 A 14  Autoestrada do Baixo Mondego Figueira da Foz - Montemor-o-Velho - Coimbra  IP 3  40 1994-2002 Brisa
 A 15  Óbidos - Rio Maior - Santarém - ** - Almeirim  IP 6  (Óbidos/  A 8 -Santarém/  A 1 )
 IC 10  (Santarém/  A 1  - Almeirim)
51
(55)
1995-2001 AE do Atlântico
 A 16  Lisbon - Pontinha - Sintra - Alcabideche  IC 16  (Lisbon - Sintra)
 IC 30  (Sintra - Alcabideche)
28 1995-2014 Ascendi
 A 17  Autoestrada do Litoral Centro Marinha Grande - Figueira da Foz - Mira - Aveiro  IC 1  100 2004-2008 Brisa
Ascendi
 A 18  Torres Vedras - ** - Carregado  IC 11  (27) -
 A 19  Porto de Mós - Azóia - Leiria  IC 2  16 2010-2011 AE do Litoral Oeste
 A 20  Circular Regional Interior do Porto Carvalhos - Ponte do Freixo - Francos  IP 1  (Carvalhos - Antas-Porto/  A 3 )
 IC 23  (Freixo-Porto - Francos-Porto/  A 28 )
17 1989-1995 AE do Douro Litoral
 A 21  Malveira - Ericeira 21 2005-2008 Mafratlântico
 A 22  Via do Infante de Sagres Lagos - Portimão - Albufeira - Faro - Castro Marim  IP 1  (Tunes/  A 2  - Castro Marim)
 IC 4  (Lagos - Loulé)
133 1991-2003 Euroscut Algarve
 A 23  Autoestrada da Beira Interior Torres Novas - Abrantes - Castelo Branco - Fundão - Covilhã - Guarda  IP 6  (Torres Novas/  A 1  - Castelo Branco)
 IP 2  (Fratel - Guarda/  A 25 )
217 1993-2003 Scutvias
 A 24  Autoestrada do Interior Norte Coimbra - ** - Mealhada - ** - Viseu - Peso da Régua - Vila Real - Chaves - Vila Verde da Raia  IP 3  162
(227)
1998-2010 Norscut
 A 25  Autoestrada das Beiras Litoral e Alta Aveiro - Viseu - Guarda - Vilar Formoso - Spain traffic signal tp18.svg - border with Spain  IP 5  197
(199)
1991-2006 Ascendi
 A 26  Autoestrada do Baixo Alentejo Sines - Spain traffic signal tp18.svg - Santiago do Cacém - Spain traffic signal tp18.svg - Beja  IP 8 
 IC 33  (Sines - Santiago do Cacém)
11
(95)
1972-2012 AE do Baixo Alentejo
 A 27  Viana do Castelo - Ponte de Lima  IP 9  24 2001-2005 AE do Norte Litoral
 A 28  Autoestrada do Litoral Norte Porto - Viana do Castelo - Caminha - ** - Valença  IC 1 
 IC 23  (Arrábida-Porto/  A 1  - Francos-Porto)
93
(123)
1960-2008 AE do Norte Litoral
 A 29  Autoestrada da Costa de Prata Angeja - Ovar - Espinho - Vila Nova de Gaia  IC 1  53 1994-2009 Ascendi
 A 30  Sacavém - Santa Iria de Azóia  IC 2  10 1998 Ascendi
 A 31  Variante a Coimbra Coimbra (south) - Coimbra (north)  IC 2  5 1991 -
 A 32  Autoestrada do Entre Douro e Vouga Oliveira de Azeméis - Vila Nova de Gaia  IC 2  35 2011 AE do Douro Litoral
 A 33  Circular Regional Interna da Península de Setúbal Funchalinho - Coina - Montijo - ** - New Lisbon Airoport - ** - Canha  IC 3  (Montijo - Canha)
 IC 32  (Funchalinho - Montijo)
37
(59)
1998-2012 AE do Baixo Tejo
 A 34  A1 - Pombal  IC 8  5 1999 -
 A 35  Mira - ** - Mealhada - ** - Mortágua - ** - Santa Comba Dão - Canas de Senhorim - ** - Mangualde  IC 12  (1998-present)
 N 234  (1995-1998)
19
(94)
1995-1998 -
 A 36  Circular Regional Interior de Lisboa Algés - Odivelas - Sacavém  IC 17-CRIL  21 1995-2011 Ascendi
 A 37  Radial de Sintra Lisbon - Queluz - Sintra  IC 19  (1994-present)
 N 249  (1985-1994)
16 1985-1994 Ascendi
 A 38  Via Rápida da Caparica Almada - Costa da Caparica  IC 20  6 1966 AE do Baixo Tejo
 A 39  Via Rápida do Barreiro Coina - Barreiro - ** - Lisbon  IC 21  7
(23)
1980-1984 -
 A 40  Olival Basto - Odivelas - Montemor  IC 22  4 1998 Ascendi
 A 41  Circular Regional Exterior do Porto Perafita - Maia - Aguiar de Sousa - Argoncilhe - Espinho  IC 24  62 Early 1990s - 2007 Ascendi
AE do Douro Litoral
 A 42  Ermida (A41) - Paços de Ferreira - Lousada  IC 25  20 2005-2006 Ascendi
 A 43  Porto - Gondomar - Aguiar de Sousa (A41)  IC 29  9 2005-2011 AE do Douro Litoral
 A 44  Gulpilhares (A29) - Vila Nova de Gaia - Oliveira do Douro (A20)  IC 23  9 2000-2007 Ascendi
AE Douro Litoral
 VRI  Via Regional Interior Francisco Sá Carneiro Airport - Custóias (A4) 3 2006 Ascendi

Label:

  • - = in use
  • - Spain traffic signal tp18.svg - = under construction
  • - ** - = planned

Tolls and taxation

As of 2013, 84% of Portuguese motorways have tolls,[25] although there are also some toll-free highways, mostly in urban areas, like those of Greater Lisbon and Greater Oporto. Tolls charge drivers by the distance they travel. Almost all motorways are managed by private concessionaries, such as Brisa and Ascendi. In the late 1990s and early 2000s, the Government of Portugal created seven shadow toll concessions, the SCUT toll (Portagens sem cobrança aos utilizadores, tolls with no charges for the users). In those concessions it were included more than 900 kilometres (560 mi) of motorways and highways, some of them already built, others which were built in the following years. However, due to economical and political reasons, the shadow toll concept was abolished between 2010 and 2011, with electronic toll equipment being installed in these motorways, to charge their users. Having only electronic tolls, former SCUT motorways can now only be used by vehicles equipped with electronic payment devices or vehicles registered in the system. In the 2000s (i.e. previous to the introduction of tolls in SCUT highways), 35% of the Portuguese motorway network was toll-free, and Portugal was already considered one of the European countries with more toll roads.[26][27] Following the introduction of tolls in former SCUT highways, 84% of the network had tolls, i.e., only 16% was toll-free.[25]

Since 1991 there is an electronic payment system for tolls in Portugal called Via Verde.[28] Under this system, the driver installs a small device on the front windshield that communicates electronically with Brisa (the company responsible for managing most of the motorways in Portugal). Since the payment is electronic, it is quick to enter or leave the motorway, avoiding payment lines (which are still available for drivers without Via Verde). This system has won several prizes for its innovative form of paying for services.[not specific enough to verify]

Principal routes

Vila Franca das Naves exit of IP2 non-motorway Celorico da Beira and Trancoso section.
Non-motorway section of IP3, between Coimbra and Viseu.

There are 9 itinerários principais (principal routes), signalized by the prefix IP, designated IP1 through IP9.[29]

IP1 and IP2 form cross-national north-south routes. The first runs along the west part of the country then ends in the southeast border of Castro Marim/Vila Real de Santo António; the second runs along the east part, roughly along the border with Spain.

All other routes follow a west-east course, with the exception of IP3 which runs mostly north-south.

All itinerários principais, except IP6 and IP9, are connected with the Spanish border. IP2 reaches Spain by route of N103-7, in the region of Trás-os-Montes e Alto Douro.

Number Route Length
 IP 1  Valença - Braga - Porto - Aveiro - Coimbra - Leiria - Santarém - Lisbon - Montijo - Setúbal - Aljustrel - Faro - Castro Marim 734 km (456 mi)
 IP 2  Portelo - Bragança - Guarda - Covilhã - Castelo Branco - Portalegre - Évora - Beja - Ourique - Faro 564 or 728 km (350 or 452 mi) (incl. N-103-7 Portelo-Bragança and IP1/A2-IP1/IC4/A22-IC4/N-125-4 Castro Verde-Faro concorrencies)
 IP 3  Vila Verde da Raia - Vila Real - Lamego - Viseu - Coimbra - Figueira da Foz 279 km (173 mi)
 IP 4  Porto - Vila Real - Bragança - Quintanilha 237 km (147 mi)
 IP 5  Aveiro - Viseu - Guarda - Vilar Formoso 204 km (127 mi)
 IP 6  Peniche - Caldas da Rainha - Rio Maior - Santarém - Torres Novas - Abrantes - Castelo Branco 219 km (136 mi)
 IP 7  Lisbon - Setúbal - Évora - Estremoz - Elvas - Caia 225 km (140 mi)
 IP 8  Sines - Santiago do Cacém - Beja - Serpa - Vila Verde de Ficalho 154 km (96 mi)
 IP 9  Viana do Castelo - Ponte de Lima - Braga - Guimarães - Amarante - Vila Real 161 km (100 mi)

Complementary routes

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.
Typical signage of a non-motorway IC road, IC27 in the Algarve.

There are 37 itinerários complementares (complementary routes), signalized by the letters IC, designated IC1 through IC37.[30]

Number Route Length (km)
 IC 1  Valença - Viana do Castelo - Póvoa de Varzim - Porto - Espinho - Ovar - Aveiro - Figueira da Foz - Leiria - Caldas da Rainha - Torres Vedras - Lisbon - Marateca - Alcácer do Sal - Grândola - Ourique - Guia (N125) 737
 IC 2  Lisbon - Rio Maior - Leiria - Coimbra - Mealhada - São João da Madeira - Argoncilhe - Porto 330
 IC 3  Setúbal - Palmela - Montijo -**- Canha - Salvaterra de Magos - Almeirim -**- Entroncamento - Tomar - Penela - Condeixa - Coimbra -**- (IP3) 177/235
 IC 4  Sines -**- [[

Lagos, Portugal|Lagos]] - Portimão - Faro || 85/?

 IC 5  Póvoa de Varzim (IC1) - Famalicão - Guimarães - Fafe - Vila Pouca de Aguiar - Murça - Vila Flor - Alfândega da Fé - Mogadouro - Miranda do Douro (border with Spain) 235
 IC 6  Coimbra - IP3 - Porto da Raiva/Aguieira Dam - Venda de Galizes -**- Covilhã (IP2) 29/87 (excl. IP3 concurrency)
 IC 7  Venda de Galizes (IC6) -**- Seia -**- Gouveia -**- Fornos de Algodres (IP5) 40
 IC 8  Figueira da Foz (IC1) - Pombal - Figueiró dos Vinhos - Pedrógão Grande - Sertã - Proença-a-Nova - Castelo Branco - Segura (IP 2) 119
 IC 9  Nazaré - Alcobaça - IC2 - Porto de Mós - Batalha - Fátima - Ourém - Tomar + Abrantes -**- Ponte de Sor (IC13) 70/104 (excl. IC2 concurrency)
 IC 10  Santarém (IP1) - Almeirim -**- Coruche -**- Montemor-o-Novo (IP7) 11/90
 IC 11  (Peniche - Lourinhã -)[31] Torres Vedras (IC1) -**- Carregado - Pegões - Marateca (IP 1) 63/90
 IC 12  Mira (IC1) - Anadia (IP 1) - Mortágua - Santa Comba Dão - Carregal do Sal - Nelas - Mangualde (IP5) 19/94
 IC 13  Montijo (IP1) -**- Coruche -**- Mora -**- Ponte de Sor -**- Alter do Chão - Crato - Portalegre -**- Spain 28/?
 IC 14  Apúlia (IC1) - Barcelos - Braga 29
 IC 15  Lisbon - Oeiras - Cascais 25
 IC 16  Lisbon (IC17) - Amadora - Belas - Alto Colaride - Sintra 20 (excl. IC18 concurrency)
 IC 17  Algés - Buraca - Olival de Basto - Sacavém (IP1) 21
 IC 18  Caxias (IC15) - Queluz - Loures - Alverca (IP 1) 35
 IC 19  Lisbon (IC17) - Queluz - Sintra (N249) 16
 IC 20  Almada - Costa da Caparica 6
 IC 21  Coina - Barreiro 7
 IC 22  Olival Basto (IC17) - Montemor (IC18) 4
 IC 23  Ponte da Arrábida - Avenida de Fernão de Magalhães - Ponte de Freixo - Avenida da República - IC1 21
 IC 24  Perafita - Maia - Aguiar de Sousa - Argoncilhe - Espinho 62
 IC 25  Ermida (IC24) - Paços de Ferreira - Lousada 20
 IC 26  Amarante (IP 4) -**- Régua - (IP3/A24) - Lamego -**- Tarouca -**- Moimenta da Beira -**- Sernancelhe -**- Trancoso (IP2) ?
 IC 27  Beja (IP2) -**- Mértola - Castro Marim (IP1) 33/93
 IC 28  Viana do Castelo (IC1) - Ponte de Lima -**- Lindoso 38/69
 IC 29  Oporto - Gondomar - Aguiar de Sousa (IC24) 16
 IC 30  Sintra (IC16) - Alcabideche (IC15) 8
 IC 31  Castelo Branco (IP2) -**- Termas de Monfortinho 56
 IC 32  Funchalinho - Coina - Montijo 40
 IC 33  Sines - Grândola - IP1/A2 - IP8/A26 -**- Santa Margarida do Sado -**- Évora (IP 7) 38/106
 IC 34  Vila Nova de Foz Côa (IP2) - Almendra - Barca de Alva (border with Spain) Project left in 2009
 IC 35  Penafiel -**- Entre-Os-Rios Bridge -**- Castelo de Paiva - Arouca (-**- Vale de Cambra -**-)[32] Sever do Vouga -**- Talhadas (IP5/A25) 4/70
 IC 36  Marinha Grande (IC1) - Leiria (IP1) 11
 IC 37  Viseu (IP5) -**- Nelas -**- Seia (IC7) 31

Note: Italics and -**- refers to unbuilt sections.

National routes

Estradas Nacionais (national routes) belong to the Complementary Network. They have three main functions: connect cities not linked by an IP or IC highway, connect municipal seats, borders, ports and airports to the rest of state-owned network and provide free alternatives to toll motorways. Examples for each of these functions can be made: N103 links Braga, Chaves and Braganza, N256 and N256-1 link the border of São Leonardo and the municipal seats of Mourão and Reguengos de Monsaraz to IP2 expressway and N4 provides a free alternative to A6 toll motorway. National roads kept the same numbering they had in the 1945 Plan, with the prefix N, and are administered by the agency Estradas de Portugal. In the 1985 Plan, these were generically referred as "other roads".

Many of the 1945 Plan's estradas nacionais were not included in the post-1985 highway plans, and were declassified from the National Road Network in anticipation of their transfer to municipal authorities. Although some were transferred, many municipalities did not assume responsibility for the management of these roads; a number of them continue to be administered by the national roads agency. Despite being declassified, most of the roads retained their designations, keeping their old numberings and N prefixes, including those that are administered by the municipalities.

Regional roads

Signage in R254 (Évora-Viana do Alentejo).

Estradas regionais (regional roads) integrate the Regional Network. This road class was created in 1998, with the approval of the 2000 National Roadway Plan. According to Law No. 222/98 "the public road communications with supra-municipal interest, and complementary to the National Road Network, are carried by Regional Roads".

Each regional road maintains the number of the national road or municipal road that originated it. Regional roads are represented by the letter R. Because, in 1998, it was rejected in a referendum, a reform which consisted of the creation of eight administrative regions in mainland Portugal, nowadays, some regional roads are administrated by Estradas de Portugal, while others are administrated by Portuguese municipalities.

Municipal roads

Estradas municipais (municipal roads) are represented by the letter M and are administrated by Portuguese municipalities. These routes were created in 1961, since which time many branches of national routes had been municipalized. Some municipal routes created by the 1985 Plan were renamed as "national roads" or "regional roads" in the 2000 Plan.

European routes

Portugal is crossed by some European routes:

See also

External links

References

  1. ^ The Global Competitiveness Report 2014-2015, World Economic Forum, p. 429
  2. ^ The Global Competitiveness Report 2017-2018, World Economic Forum, p. 243
  3. ^ The Global Competitiveness Report 2017-2018, World Economic Forum, p. 333
  4. ^ http://www.avisbestroad.com/ Avis Best Road
  5. ^ Pacheco 2001, p. 101, 104
  6. ^ Pacheco 2001, p. 104-106
  7. ^ Pacheco 2001, p. 111
  8. ^ a b "Decreto n.º 12100 de 31 de julho de 1926" [Decree 12,100 from 31 July 1926] (in Portuguese). Diário do Governo -- I série. 11 August 1926. Retrieved 2018.
  9. ^ a b "Decreto n.º 16075 de 30 de Setembro de 1928" [Decree 16,075 from 30 September 1928] (in Portuguese). Diário do Governo -- I série. 26 October 1928. Retrieved 2018.
  10. ^ Pacheco 2001, p. 121
  11. ^ "Decreto-Lei n.º 23239 de 20 de Novembro de 1933" [Decree 23,239 from 20 November 1933] (in Portuguese). Diário do Governo -- I série. 20 November 1933. Retrieved 2018.
  12. ^ Pacheco 2001, p. 126
  13. ^ Pacheco 2001, p. 126
  14. ^ "Decreto-Lei n.º 34593" [Decree-Law 34,593] (in Portuguese). Diário do Governo -- I série. 11 May 1945. Retrieved 2018.
  15. ^ Lei nº 2037 from August 19th, 1949 - Estatuto das Estradas Nacionais (en: National Roads' Statutes)
  16. ^ Lei nº 2110 August 19th, 1961 - Regulamento Geral das Estradas e Caminhos Municipais (en: General Regulation on Municipal Roads and Pathways)
  17. ^ Decreto-Lei nº 42271 from May 20th, 1959 - Municipal Roads classification
  18. ^ Decreto-Lei nº 45552 from January 30th, 1964 - Municipal Pathways classification
  19. ^ a b Zúquete, Eduardo (September 2016). "Testemunho histórico do Eng. Eduardo Zúquete sobre os transportes terrestres" [Historical testimony of Engineer Eduardo Zúquete on the terrestrial transportation] (in Portuguese). ADFERSIT. Retrieved 2018.
  20. ^ http://www.mediotejo.net/municipios-do-medio-tejo-integram-nucleo-fundador-da-rota-da-en2/ Newspaper report about the signature of Rota da Estrada Nacional 2 project. Médio Tejo Newspaper, Nov, 14th 2015
  21. ^ Decreto-Lei 64/83 from February, 3.
  22. ^ "Rede Rodoviária". www.estradasdeportugal.pt. Archived from the original on 7 June 2018. Retrieved 2018.
  23. ^ Jorge Flores (June 2002). Sempre a subir. Automotor. (in Portuguese)
  24. ^ Estradas de Portugal - PRN 2000 - Plano Rodoviário Nacional - Rede Rodoviária Nacional - AEs (IPs e ICs) (in Portuguese)
  25. ^ a b "Relatório de Monitorização da Rede Rodoviária Nacional 2012 e 2013" [Monitorization Report of the National Road Network 2012-2013] (PDF) (in Portuguese). Instituto de Mobilidade e dos Transportes. June 2014. p. 20. Retrieved 2018.
  26. ^ "Portugal é dos países com mais portagens" [Portugal is one of the countries with more toll roads] (in Portuguese). TVI24. 25 May 2008. Retrieved 2018.
  27. ^ "Portugal é o quarto país da Europa com mais quilómetros de portagens" [Portugal is the fourth country in Europe with more kilometers of toll roads] (in Portuguese). Público. 3 August 2002. Retrieved 2018.
  28. ^ "Payment systems". www.portugaltolls.com. Archived from the original on 7 June 2018. Retrieved 2018.
  29. ^ Estradas de Portugal - PRN 2000 - Plano Rodoviário Nacional - Classificação da Rede - IPs
  30. ^ Estradas de Portugal - PRN 2000 - Plano Rodoviário Nacional - Classificação da Rede - ICs
  31. ^ Project left due to heavy impact on agribuisness http://www.tvi24.iol.pt/ambiente/estradas/tracado-do-ic11-chumbado-por-causa-da-agricultura
  32. ^ Project set to be left

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