Provincial Water Supply Dunes North Holland.


In the dunes, the challenge is to balance nature and recreation. The aim is to measurably improve nature and at the same time increase recreation in the dunes. And we do all this by measuring. We measure recreational pressure with 20 Robinson counting sensors, we measure how well nature is doing (with automatic counters but also with manual counts) and in accordance with an ecological plan, measures are then taken where necessary.


The project has been running since 2020 and will be extended every year.

Sallandse Heuvelrug

Nature is dear to us, so dear that we love to recreate there. But that recreation should not come at the expense of that same nature. At the same time, we want to give every guest a fantastic experience on the Salland Ridge. In this project, we manage the crowds on the Salland Ridge.

In this project, we measure with 15 Robinson counting sensors how busy it is at which place. We combine this with the day of the week, the weather forecast, holidays and events. Based on this and on guests’ wishes, we advise and entice them to the outings (routes) where there is still enough space. And they can then immediately download those routes in their app. At the back end, there is a weighting that ensures that all places are recommended equally often.
Via a free widget, entrepreneurs, visitor centres and tourist websites can thus entice their guests to enjoy a lovely day out without harming nature. See also


The project has been running since 2021 and will be extended every year.

Nuenen - Van Gogh Village

The village of Nuenen is well known as the birthplace of Vincent van Gogh. The village is visited by many tourists partly for this reason. An important attraction in this respect is the van Gogh Village Museum. The question of the municipality and the entrepreneurs is: what is the effect of the Museum on the local economy in Nuenen?

In this project, we measure crowds at various places in the village and combine these visitor flows from the Museum. Click here for more information.

The project runs since January 2024 and lasts 1 year.

Click here for the current counts

Pumptracks in Gelderland

With an outdoor space that challenges, the province of Gelderland wants to get more people moving. As part of the World BMX Championships in Arnhem in 2021, the Papendal Sports Centre, the Ministry of Health, Welfare and Sport and the province of Gelderland have therefore made budget available for the construction of pumptracks in public spaces.

The HAN – University of Applied Sciences is investigating the effect of such a large event on the use of pumptracks.

In Arnhem, Rheden, Renkum and Wijchen, the use of the pumptracks will be measured by a laser sensor.

The project started in 2021 and will run until 2024