Iran route numbering system
# 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 denser, though there are a few sections that used to have a number that is 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

### Asian Highways

* AH1
* AH2
* AH8
* AH70
* AH71
* AH72
* AH75
* AH78
* AH82

### Motorway (Freeway)

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

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.

* Road 71 (Tehran-Qom Highway)
* Road 65 (Tehran-Saveh Highway)
* Road 22 (Coastal Road of Caspian Sea)
* Road 79 (Sevad Kooh RD) (Sari-Tehran) Some parts of it under construction
* Road 77 (Haraz Road)
* Road 62 (Esfahan-KhorramAbad Esfahan-Yazd)
* Road 65 (Tehran-Isfahan Highway)
* Road 86 (Shiraz-Kerman Shiraz-Ahvaz)
* Road 22 Turkmenistan-Mashhad-Mazandaran
* Road 36 Bardaskan-Taybad
* Road 44 (Tehran Highway) Tehran-Mashhad
* Road 16 (Azerbaijan lake Bridge)
