TCDD Taşımacılık

A high-speed trainset in Ankara.

High-speed rail service is TCDD Taşımacılık's premier trains service, currently operating four routes between Istanbul, Ankara, Eskişehir and Konya along the Ankara-Istanbul and Polatlı-Konya high-speed railways.[2] High-speed trains are branded as Yüksek Hızlı Tren or YHT and operates at speeds of up to 300 km/h (190 mph). YHT train service is expected to expand further to Sivas by 2019,[3] Afyon by 2020,[4] as well as Bursa and İzmir in the early 2020s.

YHT trains use Ankara station as their main hub, with an exclusive concourse and lounges within the Ankara Tren Garı building, built over the southern platforms at Ankara station.

High-speed train service began on 13 March 2009, between Ankara and Eskişehir and in its final year before TCDD Taşımacılık took over, YHT trains carried over 5.89 million passengers.[5]

The Pamukkale Express running through rural Afyon Province.

Intercity rail in Turkey is known as Mainline (Turkish: Anahat) service. Mainline trains operate between major cities, often as overnight trains, and make limited stops. Mainline trains also operate at greater speeds than regional and commuter trains, when the route permits it. Intercity trains were operated the most between Istanbul and Ankara and reached speeds of up to 140 km/h (87 mph) in certain sections. The Capital Express, Anatolian Express and the Republic Express were a few notable mainline trains that ran on the Istanbul to Ankara rail corridor. Once the Ankara-Istanbul high-speed railway was completed in 2014, all mainline train service between the two cities was replaced with high-speed rail service.

Mainline trains are usually equipped with TVS2000 air-conditioned cars, however refurbished Pullman cars are also used on some trains. Overnight mainline trains consist of sleeping and dining cars while some trains also have couchette cars in addition to sleepers.

During the final year before TCDD Taşımacılık took over operations, mainline trains carried over 1.3 million passengers.[5]

An Afyon-bound regional train from Eskişehir at Alayunt station.

Regional rail (Turkish: Bölgesel treni) service connects major cities to neighboring towns and villages as well as other cities. These trains are usually the slowest in the whole TCDD Taşımacılık system, making frequent stops along its route. Some trains, like the Ada Express, however operate at faster speeds similar to mainline trains. All regional rail service operates within their respective districts, using one city as a hub.

The most frequent regional rail service in Turkey is between Adana and Mersin with 27 daily trains in each direction. The second most frequent route is between İzmir and Torbalı, with 18 daily trains in each direction.

Regional trains can be locomotive-hauled or consist of diesel or electric trainsets (MUs) or even diesel railcars. Locomotive-hauled trains consist of TVS200 or regular Pullman coaches. DM15000 and DM30000 DMUs are standard along many routes, especially south of İzmir. Regional trains lack any on-board services except at-cart catering services on most trains.

During the final year before TCDD Taşımacılık took over operations, regional trains carried over 13.5 million passengers.[5]

A Marmaray train at Ayrılık Çeşmesi station.

Commuter rail service is currently provided in Istanbul and Ankara, with a new network under construction in Gaziantep. The Marmaray network in Istanbul provides trans-Bosphorus commuter rail service between Ayrılık Çeşmesi in Kadıköy and Kazlıçeşme in Fatih, with the full 76.6 km (47.6 mi) network expected to enter service towards the end of 2018. Once opened fully, trains will operate between Halkalı in Küçükçekmece and Gebze in the neighboring Kocaeli Province.

The Başkentray network in Ankara provides commuter rail service along an east-west axis between Sincan and Kayaş, with Ankara station as a hub.

All commuter rail service operates on its own right-of-way, similar to some S-Bahn systems in Germany, and are fully integrated with their respective cities' transportation network. The only commuter railway in Turkey not operated by TCDD Taşımacılık is İZBAN, which operates commuter rail on two lines in the İzmir metropolitan area.

The Istanbul-Sofia Express waiting to depart Sofia.

While TCDD used to operate several international trains to Europe and the Middle-East, most of these trains were cancelled due to the outbreak of war in Syria and Iraq, and the economic crisis in Greece. Currently, TCDD Taşımacılık operates two international trains from Istanbul to Sofia and Bucharest in Bulgaria and Romania respectively. These two routes operate out of Halkalı as a single train and later split in Bulgaria. Once the rehabilitation of the railway east of Halkalı is completed in late 2018, international train service will resume from their former terminus, Sirkeci station. An agreement between Greece and Turkey to revive the Istanbul to Thessaloniki train, cancelled in 2011, was signed in March 2016 but no progress has been made since and it is still unclear whether or not the train will resume service.

A new international passenger service from Kars to Baku, Azerbaijan, was expected to start June 2018 via the recently completed Baku–Tbilisi–Kars railway. A train such as this would be the first revenue passenger train service from Turkey to the Caucasus.[6]

Due to the volatile situation in Syria and Iraq, all international train service to the middle-east is suspended indefinitely.