The first railway, which was persistent, opened at 1888 between Tehran and the temple of Shah-Abdol-Azim in Rey. The 800km line, built on the 9mm meter, was mostly intended for pilgrims, although several quarry branches were added later. Eventually the horse was drawn, then converted to steam transport. 1952 continued until the year. The original route is now parallel to the Tehran metro line 1.
There was a long break in the development of the railway in 1914, from the time it took to build a 146 km railway from Tabriz to Jolfa, which included Azerbaijan as well as Russia. It is made according to the standard (1435 mm) gauge as the following railways in the country. However, II. With the outbreak of World War II, the total rail network was less than 700 kilometers.
The war-time of the Trans-Iran Railway has nearly tripled this figure, and subsequent developments have led to a standard measuring network, currently under construction or more than 10000km. Turkey and therefore have an international connection to the rest of Europe (albeit with Lake Van and train ferries on the Bosphorus). In the Caucasus, there was an international connection, which included an indication of the transition to Naxchivan's Azerbaijani settlement and beyond to Armenia and Russia; however, this is currently unavailable. A new international connection with Azerbaijan was proposed on the Caspian Sea, near the border town of Astara. This would connect Qazvin with a new railway to the existing network.
An international connection with Turkmenistan in Sarakhs also included a change of measure in 1996. This was envisaged as part of the potential for China, although the ongoing political tensions between Turkmenistan and Uzbekistan meant that the road could not be realized. Another connection with Turkmenistan in Incheh Borun was opened in 2013 as part of a route plan to Kazakhstan. There is also a short Russian (1520mm) measuring line from Turkmenistan serving the facility on the Loftabad border, but it has no direct connection with the rest of the Iranian network.
A new line to Zahedan was completed in 2009. This provides an intersection with the 84km line in Zahedan, previously isolated from the Pakistan border. The second line is connected to the Pakistan Railways network and is built to the 1675 mm dimension of that system.
In 2013, a short (16km) but important line opened between Khorramshahr (near Abadan) and Shalamcheh on the Iraqi border. Although the work on the Iraqi side of the border continues, it will eventually connect to the Iraqi railway network near Basra.
In 2015, the capital began construction in a new line near the Iraqi border between Tehran and Khosravi. Opening of the line at 2018 until Kermanshah. The remaining 263 km to Khosravi is expected to be completed at 2020.
Afghanistan A line between Mashhad and Herat is under construction. Iranian section up to the Afghan border near Khvaf was completed; Work on the railroad in Afghanistan continues and the cross-border link that began in 2016 has started.
In 2017, a new international connection was opened between Astara and the city of the same name in Azerbaijan. It is a dual rail (1520mm and 1435mm) tuned and will finally be connected to a new line under construction with the rest of the Iranian network.