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Weight enforcement of vehicles at full speed.

The heavier a vehicle is, the more it contributes to wear on the streets. Studies have shown that a single truck with more than two axles causes as much wear and tear as 100,000 passenger cars, resulting in a rise of maintenance costs as the number of commercial vehicles on the road increases. Not only that, but if vehicles exceed the maximum weight limit, they also pose an enormous risk to safety. To date, weight enforcement has been quite complicated. Our solution enables vehicle weight to be measured at full driving speed, and it can be combined with other applications for intelligent traffic management.


Sensors on the road surface and at weigh stations.

For our Weigh-in-Motion systems, we use high-precision piezoelectric quartz sensors that are installed directly on the surface of the road. Weigh stations are equipped with additional sensors that detect vehicle class using either laser measurement or video image processing and cameras that read vehicular number plates. This allows detection of overweight heavy commercial vehicles (HCVs) without impacting the flow of traffic. The sensors and electronics used in our Weigh-in-Motion solutions are extremely easy to integrate into existing toll collection systems by building on the available infrastructure.

Weight control and statistics.

Weigh-in-Motion allows traffic authorities to pre-select vehicles for closer inspection. Our customers use the technology to control access to bridges, roadway construction sites, or historical city centers with maximum weight limits. Another area of application is automatic weight enforcement for entering and exiting factory installations and logistics centers. Weigh-in-Motion also delivers valuable statistics since the weight of all vehicle classes is measured.

Key references

Comprehensive features and high precision.

  • Our Weigh-in-Motion solution allows detailed data on weight to be gathered, including gross weight, trailer load, axle load, axle group weight, and load imbalances.
  • According to the COST 323 specification, the measurement accuracy is +/- 5% (gross weight), +/- 8% (single axle), +/- 7% (one axle group), and +/- 2% (vehicle speed).
  • Additional sensors collect other information such as data on vehicle class, vehicle speed, number of axles, vehicle type (3D profile), and number plate.
  • Weigh-in-Motion delivers reliable results at temperatures between -40° C to +70° C and at speeds between 15 km/h and 255 km/h.
Key references

High demand.

Kapsch Weigh-in-Motion systems have been integrated into 17 of 27 weight enforcement facilities for distance-related heavy vehicle fees (HVF) in Switzerland since 2009. The Kapsch system enables vehicles to be weighed, categorized, and identified while driving via the on-board unit or the number plate. The data on weight is used to check if the vehicle is subject to the heavy vehicle fee, but it is also collected and sent in anonymized form to ASTRA, the Swiss federal roads office, via a proprietary central interface for statistical processing. We have implemented numerous Weigh-in-Motion systems since presenting the solution at ITS Europe in 2013. In Kazakhstan, we will be building an additional 18 weigh stations following a successful pilot project in which four weigh stations were built on two highways.