The Greater Doha Metro Rail, which will link Messaieed to Al Khor and Ras Laffan via Musheireb and Hamad Hospital in Doha city, will be ready in 2018.
The networks will crisscross one another at Musheireb rail station, which will be the main junction.
The first network to be known as Red, will be 174km long and cover 20 stations and link Messaieed to Al Khor and Ras Laffan via Musheireb and Hamad Hospital in Doha and Lusail City.
Lusail will have its own internal rail network.
The second Metro network, with a length of 128km, is to be known as Green. It will pass through 32 stations and link Doha city (Musheireb) to Education City and the South Industrial Area and stretch up to Umm Salal in the north.
The third Metro network will be known as Golden. It will link Hamad International Airport to Al Waab city via Doha from east to west. This network will also pass through Musheireb (the main junction), northern parts of Old Airport locality, south of Al Rayyan and Salwa Road.