an Entity references as follows:
The state road D1 (Croatian: Državna cesta D1) is a national highway in Croatia. It is a one-lane highway that spans from Macelj border crossing in the north via Krapina, Zagreb, Karlovac, Slunj, Gračac, Knin, Sinj, ending in Split. It is 421.2 kilometres (261.7 mi) long overall.