In all cases, it involved road users who were driving more than 30 km/h too fast. For instance, police officers caught a driver last weekend going 111 km/h on a road where the maximum speed is 60 km/h. This driver was lucky. After correction, the speeding exceeded the maximum speed by 47 km/h, allowing this driver to retain their license just barely.

Why a correction?

The law requires that a speeding violation can be proven with sufficient certainty. However, speed measuring equipment, like the speedometer in a car, can show inaccuracies. By applying a correction, the maximum margin of error that such equipment can have is taken into account. The correction ensures that a reliable speed is established on which a fine can be based. 
In the Netherlands, a correction of 3 kilometers per hour applies at speeds below 100 km/h, and 3 percent (or a minimum of 4 km/h) at speeds above 100 km/h.

Traffic in the harbor area

There is a lot of varied traffic in the harbor area. Think of work vehicles with a low construction speed. It is also a popular spot for cyclists. If the speed difference between various road users is large, the risk of accidents also increases. For this reason, the Port Police continues to strictly enforce speed limits in the harbor area.