Buses have served the city since the 1920s.
Tehran's transport system includes conventional buses, trolleybuses, and bus rapid transit (BRT).
The city's four major bus stations include the South Terminal, the East Terminal, the West Terminal, and the northcentral Beyhaghi Terminal.

The trolleybus system was opened in 1992, using a fleet of 65 articulated trolleybuses built by Czechia's Škoda.
This was the first trolleybus system in Iran.
In 2005, trolleybuses were operating on five routes, all starting at Imam Hossein Square.
Two routes running northeastwards operate almost entirely in a segregated busway located in the middle of the wide carriageway along Damavand Street, stopping only at purpose-built stops located about every 500 metres along the routes, effectively making these routes trolleybus-BRT (but they are not called such).
The other three trolleybus routes run south and operate in mixed-traffic.
Both route sections are served by limited-stop services and local (making all stops) services.
A 3.2-kilometer extension from Shoosh Square to Rah Ahan Square was opened in March 2010.

Tehran's bus rapid transit (BRT) was officially inaugurated in 2008.
It has 10 lines with some 215 stations in different areas of the city.
As of 2011, the BRT system had a network of 100 kilometres (62 miles), transporting 1.8 million passengers on a daily basis.
Buses have served the city since the 1920s. Tehran's transport system includes conventional buses, trolleybuses, and bus rapid transit (BRT). The city's four major bus stations include the South Terminal, the East Terminal, the West Terminal, and the northcentral Beyhaghi Terminal.
The trolleybus system was opened in 1992, using a fleet of 65 articulated trolleybuses built by Czechia's Škoda. This was the first trolleybus system in Iran. In 2005, trolleybuses were operating on five routes, all starting at Imam Hossein Square. Two routes running northeastwards operate almost entirely in a segregated busway located in the middle of the wide carriageway along Damavand Street, stopping only at purpose-built stops located about every 500 metres along the routes, effectively making these routes trolleybus-BRT (but they are not called such). The other three trolleybus routes run south and operate in mixed-traffic. Both route sections are served by limited-stop services and local (making all stops) services. A 3.2-kilometer extension from Shoosh Square to Rah Ahan Square was opened in March 2010.
Tehran's bus rapid transit (BRT) was officially inaugurated in 2008. It has 10 lines with some 215 stations in different areas of the city. As of 2011, the BRT system had a network of 100 kilometres (62 miles), transporting 1.8 million passengers on a daily basis.
Tehran