Europe has a system of European routes that are numbered E1 and up. The cross national borders. They are the responsibility of the United Nations Economic Commission for Europe (UNECE). They are somewhat similar to the interstate highway system of the United States.

Table of contents
1 Numbering System
2 Class A Roads
3 Class B Roads
4 References

Numbering System

The route numbering system, defined by UNECE, is as follows.
  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. North-south reference roads have two-digit odd numbers terminating in the figure 5 and increasing from west to east. East-west orientated reference roads have two-digit even 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 eastward from road E99 have three-digit odd numbers from 101 to 129. Other rules mentioned in paragraph 2 above apply to these roads.
  4. Branch, link and connecting roads located eastwards of E101 have 3-digit numbers, beginning with 0, from 001 to 099.

Class A Roads

North-South Reference

West-East Reference

North-South Intermediate

West-East Intermediate

Class B Roads

See also Road transport.