The Rotterdam Metro is a rapid transit system operated in Rotterdam, Netherlands and surrounding municipalities by RET. The first line, called Noord – Zuidlijn opened in 1968 and ran from Centraal Station to Zuidplein, crossing the river Nieuwe Maas in a tunnel. It was the first metro system to open in the Netherlands. At the time it was also one of the shortest metro lines in the world with a length of only 5.9 km (3.7 mi).

Spijkenisse is a city in the province of South Holland, Netherlands. Following an administrative reform in 2015, it is part of the municipality of Nissewaard, and has a population of 72,500. It covers an area of 30.27 km2 (11.69 sq mi) of which 4.15 km2 (1.60 sq mi) is water. It is part of the Greater Rotterdam area.