Iran route numbering system
Iran route numbering system is a network of highways and roads in Iran that is managed by Iran Road Maintenance & Transportation Organization . The network comprises main highways and several major and minor country roads.
History
Probably in the late 1990s, all road numbers were changed. The old system was also a grid, but with only 5 east-west routes (even numbers 2-10) and only 7 north-south routes (odd numbers 1-13). Therefore, the new system is a lot more dense, though there are a few sections that used to have a number which are not numbered anymore.
Route signs
blue on motorways, green on other roads. 3-digit numbers appear in black on a white rectangle
- Common route signs used in Iran
Freeway marker
Expressway marker
Road marker
Routes
Motorway (Freeway)
Numbers roughly increase from west to east .
National highway
Odd numbers (11-99) generally denote north-south routes, while even numbers (12-98) denote east-west routes. Numbers increase in eastbound and southbound direction respectively. There are some A roads without a national number. Motorways do not have national numbers. 3-digit numbers are derived from 2-digit numbers by adding a digit at the end.
References
- Iran Road Maintenance & Transportation Organization
- Road management center of Iran
- Ministry of Roads & Urban Development of Iran
| Freeways |
|  | ||||
|---|---|---|---|---|---|---|
| First-Class Roads | ||||||