puoliperävaunuihin
Puoliperävaunuihin, known in English as semi-trailers, are a common type of trailer used in road transport. They are characterized by having a gooseneck or fifth wheel coupling that connects to a tractor unit. Unlike a full trailer, a semi-trailer does not have front wheels and relies on the tractor unit for support and steering. This design allows for a more efficient load distribution and better maneuverability compared to older trailer configurations.
The structure of a puoliperävaunu typically consists of a load-bearing chassis, axles with wheels, and a coupling
The combination of a tractor unit and a semi-trailer, often referred to as a semi-trailer truck or