The invention relates to a trailer, a method for manufacturing a trailer and a method for dosing antiskid treatment material onto the surface of a transport infrastructure. The trailer has a frame (10), wheels (18) attached to the frame on bearings, a bed (20), which is pivotedly attached to the frame, and a cylinder for tipping the bed. In the first end of the frame there is a tow bar (12) for attaching to a pulling device. The attaching means of the bed are arranged in the frame in the area between the wheels and the tow bar, wherefore in a tipping situation the outer end of the bed, when seen from the direction of the tow bar, rises, and the end closer to the tow bar remains in its place in the vertical direction. The trailer can comprise a scattering device (40) placed in the first end of the frame of the trailer, for dosing antiskid treatment material, such as crushed stone. The placement of the scattering device is selected so that antiskid treatment material placed on the bed runs directly into the scattering device when tilting the bed.
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