bed

Swingbed (swing-bed) wagon

1) Rail wagon designed for piggyback operations. Has a hydraulically-operated, hinged loading platform that swings out to the side and slopes down to allow semi-trailers to be loaded.

Roller-bed floor

1) Floor accommodating many rollers (ie like large ball bearings) which can be raised hydraulically to allow easy manual movement of pallets, etc in any direction to achieve maximum space utilization, and then lowered to leave flat, solid floor on which pallets will not move. Found mainly in aircraft freight holds and in some goods vehicles.