The third important media is the outdoor and transit in Tehran, the most other cities in Iran. Billboards are privately owned, but they should have authorization for the location, from the Municipality. The transit advertisement is mostly done on city buses.
Various Types of Outdoor Advertising Tools are performed in major large cities. Tehran is the city where they have the most variability.
Billboards: 4 x 12, 3 x 6, 3 x 5, 3 x 4, 2 x 4, meters and some other various non-standard formats.

Note:
Naturally, all advertising companies have to abide by certain rules and regulations. All Women have to be in full Islamic dress, also advertising of Cigarette, Alcohol and other similar items are forbidden.