Wikipedia:

international E-road network

European Route Sign
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European Route Sign

The international E-road network is a network of roads in Europe, numbered E1 and up. They cross national borders and are the responsibility of the United Nations Economic Commission for Europe (UNECE). The network also reaches central Asian countries like Kazakhstan, since they are members of the UNECE.

In most countries, roads carry the European route designation beside national road numbers. Other countries like Sweden have roads with exclusive European route signage. E-roads in the United Kingdom are not signposted at all, and are not recognised by the UK authorities[citation needed], while the Republic of Ireland has only placed E-route numbers on one recent road scheme (2007). Other continents have similar international road networks: e.g. the Pan-American Highway in the Americas, and the Asian Highway Network.

The International E-road network
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The International E-road network
Intersection of E42 and E451 from over Frankfurt International Airport
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Intersection of E42 and E451 from over Frankfurt International Airport

Numbering system

The route numbering system, defined by UNECE since 1975, went through a major change in 1992 and is now as follows (text and layout slightly modified from the original for clarity of understanding):

  1. Reference roads and intermediate roads, called Class-A roads, have two-digit numbers. Branch, link and connecting roads, called Class-B roads, have three-digit numbers.
  2. In general:
    • North-south reference roads have two-digit numbers terminating in the figure 5 and increasing from west to east.
    • East-west reference roads have two-digit numbers terminating in the figure 0 and increasing from north to south.
    • Intermediate roads have two-digit odd (north-south) and two-digit even (west-east) numbers between the numbers of the reference roads between which they are located.
    • Class-B roads have three-digit numbers, the first digit being that of the nearest reference road to the north, the second digit being that of the nearest reference road to the west, and the third digit being a serial number.
  3. North-south Class-A roads located eastwards of road E99 have three-digit odd numbers from 101 to 129. Other rules mentioned in paragraph 2 above apply to these roads.
  4. Class-B roads located eastwards of E101 have 3-digit numbers beginning with 0, from 001 to 099.

Exceptions

In the first established and approved version, the road numbers were well ordered. Since then a number of exceptions to this principle have been allowed.

Two Class-A roads, namely E47 and E55, have been allowed to retain their pre-1992 numbers, E6 and E4 respectively, within Sweden and Norway. These exceptions were granted because the excessive expense connected with re-signing not only the long routes themselves, but also the associated road network in the area, since Sweden and Norway have integrated the E-roads into their national networks and they are signposted as any other national route. These roads maintain their new numbers from Denmark and southward, though, as are other European routes within Scandinavia.

Further exceptions are E67, going from Estonia to Poland (wrong side of E75 and E77), assigned around year 2000, simply because it was best available number for this new route, most of E63 in Finland (wrong side of E75) E8 in Finland (partly on the wrong side of E12 after a lengthening around 2002) and E82 (Spain and Portugal, wrong side of E80). These irregularities exist just because it is hard to maintain good order when extending the network, and the UNECE does not want to change road numbers unnecessarily.

Notes to the listings

In the road listings below, a hyphen ('–') indicates a land road connection between two towns/cities—the normal case—while an ellipsis (three dots, '…') denotes a stretch across water (with or without ferry connection).

Class A roads

The E-road network in Belgium
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The E-road network in Belgium
The E-road network in Bulgaria
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The E-road network in Bulgaria
The E-road network in Germany
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The E-road network in Germany
The E-road network in the Netherlands
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The E-road network in the Netherlands
The E-road network in Poland
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The E-road network in Poland
The E-road network in the United Kingdom and Ireland
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The E-road network in the United Kingdom and Ireland

North-South reference

West-East reference

North-South intermediate