Two separate serious collisions were reported in Hoorn. On October 23, two occupants were injured when two cars collided at the intersection of De Weel and Orion Street. One car crossed concrete blocks and stopped on a cycle path, while the other ended up on the pavement after hitting a road sign. Both occupants were taken to hospital with injuries whose severity was not disclosed, and police investigated the cause.

On October 29, two people were injured in a collision on the Westerdijk shortly after 8 p.m. A 72-year-old man from Amsterdam was arrested on suspicion of causing serious injury and driving under the influence of alcohol. Police were investigating, and the Westerdijk remained closed in both directions.