Turkish State Highway System
Devlet Yolu | |
---|---|
System information | |
Maintained by Karayolları Genel Müdürlüğü | |
Length | 30,974 km (2021) (19,246 mi) |
Formed | 1950 |
Highway names | |
Devlet Yolu: | D.XXX |
System links | |
The State Highways of the Republic of Turkey (
In the early 21st century, the network was greatly expanded to accommodate four-lane highways throughout the country. As of 2021, 19,790 km (12,300 mi) of the total 30,974 km (19,246 mi) system are four-lane highways.[1]
System overview
Unlike
Numbering
All state highways have a three-digit designation preceded by a D. The system is numbered based on direction and location. Route numbers range from 010 to 977, while 010 to 490 are east-west routes and 505 to 977 are north-south routes. Odd-numbered routes generally run north-south, while even-numbered routes generally run east-west. The only exception to this rule are four north-south routes, D.550, D.650, D.750, D.850 and D.950, that have even-number designations. The second criterion is based on the geographical location of the route. For north-south roads, routes in the west will have lower numbers, while routes in the east have higher numbers. For east-west roads, routes in the north will have lower numbers that get higher towards the south.
Main roads are designated as multiples of 100 and 50, with the exception being D.010. Multiples of 100 are main east-west roads, while multiples of 50 are main north-south roads. D.010 is the only exception to this rule.
See also
- List of otoyol routes in Turkey
- Transport in Turkey
- List of highways in Turkey
- Otoyol
- List of countries by road network size Turkey, 19th