The A4 motorway, also called Rijksweg 4, is a motorway in the Netherlands running southwards from Amsterdam to the Belgian border near Zandvliet, north of the city of Antwerp. The 119-kilometre-long (74 mi) A4 is divided into two sections; the first and longer section runs from Amsterdam to the A15 near the city of Rotterdam, while the second section starts near Heijningen, where the A29 and the A4 meet, going to the Belgian border.

European route E30 is an A-Class European route from the port of Cork in Ireland in the west to the Russian city of Omsk, near the border with Kazakhstan in the east. For much of the Russian stretch, it follows the Trans-Siberian Highway and, east of the Ural Mountains, with AH6 of the Asian Highway Network, which continues to Busan, South Korea. The total length is 6,530 km (4,060 mi)—3,300 km (2,100 mi) from Cork to Moscow, and 3,230 km (2,010 mi) from Moscow to Omsk. The naming is by the United Nations Economic Commission for Europe (UNECE).