For this story, the figures as available on January 13 were used. The figures come from DOVA, a partnership of the public transport authorities, which consist of the 12 provinces, the Amsterdam Transport Region, the Rotterdam The Hague Metropolitan Region, and the Groningen Drenthe public transport agency. These public transport authorities are responsible for the data, but some outsource the provision of the stop data to the road authorities. As a result, data may be outdated in some cases, because road authorities have not yet processed the current situation, or have made adjustments after January 13. According to DOVA, road authorities are responsible for the infrastructural management of the stops.

