' (, , abbr. NS ) is the principal passenger railway operator in the Netherlands. It is a Dutch state-owned company founded in 1938. The Dutch rail network is the busiest in the European Union, and the third busiest in the world after Switzerland and Japan.International Union of Railways Annual Report, 2015.
' (, , abbr. NS ) is the princi,pal passenger railway operator in the Netherlands. It is a Dutch state-owned company founded in 1938. The Dutch rail network is the busiest i,n t!he European Union, and the third. busiest in the world after Switzerland and Japan.International Union :of Railways Annual Report, 2015.