Aseman Air also runs services to the major cities. The vast size of Iran makes internal flights the most practical method of transport. The Trans-Iranian Railway is of relatively recent construction, having been started in 1938. There are many areas in the mountains and the desert which can only be reached by rail. There are some air-conditioned trains, and sleeping and dining cars on many trains.
Daily services run on all routes.
Traffic drives on the right. Group taxis for up to ten people are available for intercity travel. Prices are negotiated beforehand and tipping is not necessary. Available in most cities and from airports. An International Driving Permit is recommended but it is not a legal requirement.