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.

Route signs
blue on motorways, green on other roads. 3-digit numbers appear in black on a white rectangle

Motorway (Freeway)
Numbers roughly increase from west to east.


 * , under construction
 * , (Hamedan-Kermanshah-Khosravi) planned
 * , under construction
 * , Partly built
 * , under construction
 * , (Hamedan-Kermanshah-Khosravi) planned
 * , under construction
 * , Partly built
 * , under construction
 * , 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.


 * (Sari-Tehran) Some parts of it under construction
 * Turkmenistan-Mashhad-Mazandaran
 * Bardaskan-Taybad
 * Tehran-Mashhad
 * Turkmenistan-Mashhad-Mazandaran
 * Bardaskan-Taybad
 * Tehran-Mashhad
 * Turkmenistan-Mashhad-Mazandaran
 * Bardaskan-Taybad
 * Tehran-Mashhad
 * Tehran-Mashhad