An accident involving a motorcycle and at least three cars closed the A1 highway towards Amsterdam between Naarden-West and Diemen on Thursday morning. Traffic information service VID calls it a "serious accident" and expects it to cause many traffic problems.
By around 6:30 a.m. the traffic jam behind the accident was already 7 kilometers long, according to VID on Twitter. Motorists are advised to detour via Utrecht over the A27, A12 and A2. It is unclear how long the road will be closed.