A milieuzone (low emission zone) is an area in a city where certain road vehicles are not allowed due to the level of pollution they emit. For example, diesel cars and lorry trucks. Are you unable to drive your vehicle in a low emission zone in the Netherlands because it doesn’t meet the emissions standards? You may be eligible for an exemption from the municipality.
On the milieuzones.nl website you can find out whether your vehicle is allowed in a low emission zone (in Dutch).