D0 motorway (Czech Republic)

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D0 Motorway
Dálnice D0
Prague Ring Pražský okruh
Route information
Part of E50 E65
Length	40 km (25 mi) 78 km (48 mi) / 90.8 km (56.4 mi)
Major junctions
Beltway around Prague
Major intersections
Route map (planned) D 3 / E55 (3) Vestec Písnice (under construction) Tunnel Komořany 1972 m Komořany (under construction) Radotínský most 2045 m Vltava (10) Zbraslav R 4 Berounka Tunnel Lochkov 1661 m Lochkovský most 460 m (15) Lochkov (16) Slivenec (19) Ořech (21) Jinočany (23A) Chrášťany (23) Třebonice D 5 / E50 (26) Řepy R 6 / E48 (23) Třebonice (28) Ruzyně R 7 Přední Kopanina (planned) R 7 Horoměřice (planned) Suchdol (planned) Tunnel Suchdol (planned) Rybářka (planned) Suchdol (planned) Vltava Čimice (planned) Ústecká (planned) Březiněves (planned) D 8 / E55 Třeboradice (planned) Přezletice (planned) Vinoř (planned) (58) Satalice R 10 / E65 (59) Chlumecká (60) Horní Počernice D 11 / E67 Běchovice (planned) I/12 Uhříněves (planned) Říčany (planned) Lipany (planned) (76) Modletice D 1 / E50 (82) Jesenice
Location
Country	Czech Republic
Regions	Praha, Central Bohemian
Major cities	Prague
Highway system
Highways in the Czech Republic

D0 motorway (Czech: Dálnice D0) or Prague Ring Road (Czech: Pražský okruh) is a motorway which, when completed, would create an outer ring road around in Prague, Czech Republic. Most of the Czech motorways radiate from the D0. Unlike the inner ring road, whose sub-sections have been given different official street names, the Prague Ring Road is also the official name of a street in all parts of the ring road leading through Prague.

It was formerly called R1 expressway (Czech: Rychlostní silnice R1). Two disjunct sections are opened to the public, one going all the way from the Ruzyně Airport to the interchange with the D1 highway, the other one being a 5-kilometre-long (3.1 mi) road on the eastern border of Prague. A section connecting these two segments is to be built next. Other segments under preparation include a bridge over the Vltava river near Suchdol.

In 1998, the estimated cost of the construction was CZK 31 billion, in February 2005 the price was raised to CZK 47 billion and in 2009 the Ministry of Transport announced that CZK 71 billion was still needed for completion. In the meantime, 40km from the planned 80km are in operation. Completion is now expected to be 2030 at the earliest.