Turkey Road Network

By | December 20, 2022

Turkey ‘s otoyol.

According to wholevehicles, Turkey has an extensive network of roads connecting all parts of the country. The road network is divided into highways (otoyollar), state roads (devlet yolları) and provincial roads (İl yolları). These roads together cover 65,000 kilometers.

The network of fully-fledged motorways is relatively small, covering 3,503 kilometers as of 1 January 2021. However, Turkey has a very extensive network of state roads with a minimum of 2×2 lanes, namely 20,722 of the 31,006 kilometers of devlet yolu has separate carriageways and a minimum of 4 lanes. This is also the reason that there are relatively few fully-fledged motorways in Turkey, because almost all cities are already connected via roads with at least 4 lanes.

The highway network traditionally consisted of four different networks that were not interconnected, except those of Ankara and Istanbul. In addition, there were highways around İzmir and in the south of the country between Adana, İskenderun, Gaziantep and Şanlıurfa. Between 2015 and 2020, the networks of Istanbul, İzmir, Ankara and southern Turkey are connected. Despite this, many cities in Turkey are not connected to the motorway. A highway is called an otoyol in Turkish, the prefix is ​​an “O”, not to be confused with a 0 (zero).

The highway network is relatively new; it was largely built from the 1980s and in 2020 included more than 3,000 kilometers of highway. The motorway network will be expanded by another 1,000 kilometers. The 4 highway networks will be integrally connected. The highway network is of high quality and has at least 2×3 lanes almost everywhere, including in the countryside. The Ankara Ring and Istanbul Bypass have 2×4 lanes. The construction of new highways is not easy and not cheap due to the mountainous nature of the country. Tolls are charged on most highways, but not on 2×2 state roads. For through traffic, the highway from Edirne to Ankara is especially important, previously this was the combination of the O-3, O-1 and O-4, since 2020 one can also use the Istanbul bypass.

In addition to the highways, there is a reasonably developed secondary road network, which often consists of wide express roads with 2×2 lanes, which do not always have grade-separated intersections. Most major cities are connected by expressways. An urban highway network is often lacking, but most cities do have wide boulevards. What is striking about the motorways is that the exits often consist of long connecting roads of up to 10 kilometers, which is especially the case around Istanbul. Istanbul also has the most extensive highway network; around Ankara there is only a ring road. Exits often have branches where the exit number gets a 1 after it, so exit 17 becomes 171.

Otoyollar in Turkey
O-1 • O-2 • O-3 • O-4 • O-5 • O-6 • O-7 • O-20 • O-21 • O-22 • O-30 • O-31 • O- 32 • O-33 • O-50 • O-51 • O-52 • O-53 • O-54 • O-57
Devlet yolları in Turkey
East-West RoutesD010 • D016 • D020 • D030 • D040 • D050 • D052 • D060 • D070 • D080 • D100 • D110 • D120 • D130 • D140 • D150 • D160 • D170 • D180 • D190 • D200 • D210 • D220 • D230 • D240 • D250 •D260 • D270 • D280 • D290 • D300 • D302 • D310 • D320 • D330 • D340 • D350 • D360 • D370 • D380 • D390 • D400 • D410 • D420 • D430 • D440

North-South Routes

D505 • D515 • D525 • D550 • D555 • D565 • D567 • D569 • D571 • D573 • D575 • D585 • D587 • D595 • D605 • D615 • D625 • D635 • D645 • D650 • D655 • D665 • D675 • D685 • D687 • D695 •D696 • D705 • D715 • D750 • D753 • D755 • D757 • D759 • D765 • D775 • D785 • D805 • D815 • D817 • D825 • D835 • D850 • D851 • D855 • D865 • D875 • D877 • D883 • D885 • D887 • D905 •D915 • D925 • D950 • D955 • D957 • D959 • D965 • D975 • D977


Toll collection takes place completely electronically in Turkey, which means that in many places it is no longer possible to pay with cash or credit card. There are two payment options, by means of an RFID transponder, called OGS (Otomatik Geçiş Sistemi). Alternative is the electronic toll card called HGS (Hızlı Geçiş Sistemi). Until 2013, the KGS (Kartlı Geçiş Sistemi) card was accepted, which has been replaced by the HGS.

European roads

European roads in Turkey
E70 • E80 • E84 • E87 • E88 • E89 • E90 • E91 • E95 • E96 • E97 • E98 • E99 • E691 • E881 • E981 • E982

Asian Highways

Asian Highways in Turkey
AH1 • AH5 • AH84 • AH85 • AH86 • AH87


The highways have green signs with white letters. The arrows on fork boards consist of a simple fork without a wider arrowhead. The underlying road network has blue signs, from the highway this is also referred to in blue by a blue box on the green background. Local targets are in a white box. The signage is generally very reasonable, especially on the highways. The German road number plate is used, but with a red-orange background. Sometimes the road number frame is in black, but a white frame can also be observed. E numbers are also indicated in Asian Turkey. Distances to turns are indicated as seen everywhere in Europe.

Portal signs have the same downward arrows as you see in the Netherlands. Portals are also found on the OWN and in cities. A unique font is used, which somewhat resembles the Dutch font, with minor adjustments for deviating Turkish letters. The signage is not overrun with targets on the main roads and is generally very clear. Distance signs also indicate targets hundreds of kilometers away on the underlying road network. The road number is separated with the prefix by a dash (-) or a period (.). Electronic traffic management is mainly used in tunnels.

Road numbering

The highways are numbered according to zoning, the single-digit highways are in the northwest of the country, specifically around Istanbul, the O-2x is around Ankara, the O-3x is around Izmir and the O-5x is in the southeast of the country. The national roads are called the Devlet yollari and east-west routes are numbered less than 500, north-south routes are numbered above 500. The main east-west routes end with 00, the most important then 0. The main north-south routes are numbered that ends in 50, then ends in 5. Provincial roads have 4 digits with a space between the first two and the last two digits. The first two digits have a provincial code, which are numbered in alphabetical order, 01 for Adana and 67 for Zonguldak. 68 to 76 are exceptions.

The indication of the road numbers in practice varies greatly. In particular, the separator between the prefix and the road number varies. The road design manual contains a low bar which is shorter than the standard low bar _. Signs that are signposted in practice in Turkey;

  • O.1
  • O 1
  • O-1
  • O_1
  • O 1
  • O1

Maximum speed

As of 1 July 2022, the maximum speed on most motorways has been increased from 120 km/h to 130 or 140 km/h.

Road safety

Year Road fatalities
2010 4.045
2011 3,835
2012 3.750
2013 3.685
2014 3.524
2015 7,530*
2016 7,300
2017 7.427
2018 6.675

* Break-in-time series

Turkey Road Network