Tehran is served by the Mehrabad and Khomeini international airports, a central railway station, the rapid transit rail system of the Tehran Metro, as well as a trolleybus and a BRT system, and has a large network of highways.
There have been plans to relocate Iran's capital from Tehran to another area; due mainly to air pollution and the city's exposure to earthquakes. To date, no definitive plans have been approved. A 2016 survey of 230 cities by consultant Mercer ranked Tehran 203rd for quality of living.[12]
