The Dálnice D0 (also known as the Praha Ring and previously known as the Rychlostní silnice R10) is a motorway in the Czech Republic which encircles the southern and western parts of the city of Praha, with plans to eventually expand the route to completely encircle the capital city. It is featured in the Euro Truck Simulator 2 base game.
The D0 was originally designated as the Rychlostní silnice R1 at the time of Euro Truck Simulator 2's initial release in 2012, and this was reflected in-game with a blue icon to mark the motorway. However, on 31 December 2015, the Czech government merged the dálnice and rychlostní silnice classifications together, resulting in the R0 being reclassified as the D0. The in-game signage was eventually updated to reflect this change about half a year later.