The road signs of the Kingdom of the Netherlands (mainland Netherlands and six Dutch Caribbean islands) — as well as Suriname[a] are regulated in the Reglement verkeersregels en verkeerstekens 1990, commonly abbreviated as RVV 1990.
[1] While most previous signage, from the RVV 1966 remained legal and official, they have been updated/replaced.
Some aren't official anymore and have lost legal validity, but most surviving old signs remained valid.
Below, signs are withdrawn or replaced with new diagrams of the same meaning.