Azerbaijan is a country in the Caucasus region, situated at the juncture of Eastern Europe and West Asia. Three physical features dominate Azerbaijan: the Caspian Sea, whose shoreline forms a natural boundary to the east; the Greater Caucasus mountain range to the north; and the extensive flatlands at the country's center. About the size of Portugal or the US state of Maine, Azerbaijan has a total land area of approximately 86,600 km², less than 1% of the land area of the former Soviet Union. Of the three Transcaucasian states, Azerbaijan has the greatest land area. Special administrative subdivisions are the Nakhchivan Autonomous Republic, which is separated from the rest of Azerbaijan by a strip of Armenian territory, and the Nagorno-Karabakh Autonomous Region, entirely within Azerbaijan. The status of Nagorno-Karabakh is disputed by Armenia, but is internationally recognized as territory of Azerbaijan.
Armenia is a landlocked country in the South Caucasus region of the Caucasus. The country is geographically located in West Asia, within the Armenian plateau. Armenia is bordered on the north and east by Georgia and Azerbaijan and on the south and west by Iran, Azerbaijan's exclave Nakhchivan, and Turkey.
The transport in Azerbaijan involves air traffic, waterways and railroads. All transportation services in Azerbaijan except for oil and gas pipelines are regulated by the Ministry of Transportation of Azerbaijan Republic.
Geographically, the country of Iran is located in West Asia and borders the Caspian Sea, Persian Gulf, and Gulf of Oman. Topographically, it is predominantly located on the Persian Plateau. Its mountains have impacted both the political and the economic history of the country for several centuries. The mountains enclose several broad basins, on which major agricultural and urban settlements are located. Until the 20th century, when major highways and railroads were constructed through the mountains to connect the population centers, these basins tended to be relatively isolated from one another.
The South Caucasus, also known as Transcaucasia or the Transcaucasus, is a geographical region on the border of Eastern Europe and West Asia, straddling the southern Caucasus Mountains. The South Caucasus roughly corresponds to modern Armenia, Georgia, and Azerbaijan, which are sometimes collectively known as the Caucasian States. The total area of these countries measures about 186,100 square kilometres. The South Caucasus and the North Caucasus together comprise the larger Caucasus geographical region that divides Eurasia.
The Nakhchivan Autonomous Republic is a landlocked exclave of the Republic of Azerbaijan. The region covers 5,502.75 km2 (2,124.62 sq mi) with a population of 459,600. It is bordered by Armenia to the east and north, Iran to the southwest, and Turkey to the west. It is the sole autonomous republic of Azerbaijan, governed by its own elected legislature.
The Aras is a river in the Caucasus. It rises in eastern Turkey and flows along the borders between Turkey and Armenia, between Turkey and the Nakhchivan exclave of Azerbaijan, between Iran and both Azerbaijan and Armenia, and, finally, through Azerbaijan where it flows into the Kura river. It drains the south side of the Lesser Caucasus Mountains while the Kura drains the north side of the Lesser Caucasus. The river's total length is 1,072 km (666 mi) and its watershed covers an area of 102,000 km2 (39,000 sq mi). The Aras is one of the longest rivers in the Caucasus.
Armenian Railways was a rail operator in Armenia.
The following outline is provided as an overview of and topical guide to Azerbaijan:
Rail transport in Azerbaijan is operated by the national state-owned railway company Azerbaijan Railways. The railway network consists of 2,918 km (1,813 mi), its gauge is 1,520 mm, 815 km (506 mi) are double track and 1,272 km (790 mi) are electrified at 3 kV (3,000 V) DC.
The majority of the population of Iran consists of Iranic peoples. The largest groups in this category include Persians and Kurds, with smaller communities including Gilakis, Mazandaranis, Lurs, Tats, Talysh, and Baloch.
Azerbaijan Railways is the national state-owned rail transport operator in the Republic of Azerbaijan. The 2,918 km (1,813 mi), 1,520 mm gauge network is electrified at 3 kV (3,000 V) DC. The headquarters of the Azerbaijan Railways is in the capital Baku.
Azerbaijan–Russia border is the state border between Russia and Azerbaijan. It is 338 km in length and runs from the tripoint with Georgia in the west to the Caspian Sea the east. Prior to 1991 it formed the border between the Russian Soviet Federative Socialist Republic and the Azerbaijan SSR within the Soviet Union. The southernmost point of the Russian Federation is located on the border.
The Armenia–Azerbaijan border is the international border between Armenia and Azerbaijan. Estimates of the border's length vary from 996 km (619 mi) to 1,007.1 km (625.8 mi). European routes E002 and E117 cross the border.
The Azerbaijan–Turkey border is a short 17 km (11 mi) long international border between the Republic of Azerbaijan and the Republic of Turkey. The border is located at the southeastern tip of the Iğdır Province on the Turkish side and at the northwestern tip of the Nakhchivan Autonomous Republic on the Azerbaijani side; running entirely along the Aras river, it is the shortest border for both countries.
The Azerbaijan–Iran border is 689 km in length and consists of two non-contiguous sections separated by the Armenia–Iran border.
The Armenia–Iran border is 44 km (27 mi) in length and runs from the tripoint with Azerbaijan’s Nakhchivan region in the west to the tripoint with Azerbaijan proper in the east.
