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[edit]

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 denser, though there are a few sections that used to have a number that is not numbered anymore.

Route signs[edit]

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[edit]

Asian Highways[edit]

Motorway (Freeway)[edit]

Numbers roughly increase from west to east .

Freeway 1 (Qazvin-Rasht Freeway)
Freeway 2
Freeway 2
Freeway 3 (Tehran-Shomal Freeway), under construction
Freeway 5
Freeway 6 (Saveh-Hamedan Freeway), (Hamedan-Kermanshah-Khosravi) planned
Freeway 7
Freeway 9 (Mo'allem Freeway) (Isfahan-Shahinshahr Freeway), under construction
Freeway 16 (Tabriz-Urmia Freeway), Partly built
Freeway 51 (Zobahan Freeway), under construction

National highway[edit]

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.