An apparatus for dynamic axle-load weighing comprises a base structure, a number of load cells (9) arranged on the base structure, and a weighing platform (7) which is supported by the load cells and over which passes a vehicle to be weighed. The weighing platform (7) has, in the direction of travel (15), an extent which is at least substantially equal to, albeit larger than, the extent of the vehicle pressure surfaces (17) in this direction. The weighing platform (7) has a low weight and is easily mobile and thus of low dynamic inertia. At least one load cell (9) is arranged at each side portion of the weighing platform. The load cells (9) are of a type having a large load-receiving surface and a small height as well as being insensitive to side loads. There are provided means for producing a summation measurement value on the basis of the output signals from the load cells.
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