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A unique alliance of 24 public authorities A nationwide portal for traffic information Less delay during roadworks and events A wealth of data for use in traffic analyses



In the Netherlands, the National Data Warehouse for Traffic Information (NDW) is an organisation best known for the product that gives it its name: its enormous database of both real-time and historic traffic data. Yet NDW is more than its database.

First and foremost, it is a unique alliance in which 19 public authorities work together, learn from each other, and consolidate their data and other resources. Its goal? To apply the right data to obtain optimal traffic management and to provide road users with the best possible information resulting in less congestion, lower emissions of CO2 and other pollutants, and improved safety.

About NDW

NDW video

NDW has 19 public authorities working together on collecting, storing and distributing traffic data. This data is used to provide traffic information, to ensure effective traffic management, and to conduct accurate traffic analyses. The objective of all this is better accessibility and traffic flow.

The partners in NDW are: the central government, all the provinces, all the urban regions, and the municipalities of Amsterdam, Rotterdam, The Hague and Utrecht.


NDW processes real-time data pieces:


Our partners

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