An interchanging arrangement for interchanging at least first and second load units carried by a vehicle, both of said load units having first and second ends (101A, 101B, 102A, 102B), wherein the arrangement comprises: - a landing device arranged between the first end of the first load unit and the second end of the second load unit so that a first portion of said landing device is supported to the first end of the first load unit and a second portion of said landing device is supported to the second end of the second load unit for interchanging said load units, - a moving device arranged for moving and unloading the first load unit from the vehicle in a first direction and onto the top of the second load unit located next to the vehicle, characterized in that, - said moving device is further arranged for releasing the first load unit, and for gripping the second load unit below the first load unit and moving and loading said second load unit onto the vehicle so that said first load unit is still on the top of the second load unit at the beginning of the moving of the second load unit and so that said first load unit slides on the top and along the second load unit in said first direction during loading said second load unit onto the vehicle until the first end of the first load unit meets the second end of the second load unit, and - said landing device is configured to move said first end of said first load unit into a lower level than the second end of the second load unit after said first end of the first load unit has met said second end of the second load unit. wherein the arrangement comprises: - a landing device arranged between the first end of the first load unit and the second end of the second load unit so that a first portion of said landing device is supported to the first end of the first load unit and a second portion of said landing device is supported to the second end of the second load unit for interchanging said load units, - a moving device arranged for moving and unloading the first load unit from the vehicle in a first direction and onto the top of the second load unit located next to the vehicle, - a landing device arranged between the first end of the first load unit and the second end of the second load unit so that a first portion of said landing device is supported to the first end of the first load unit and a second portion of said landing device is supported to the second end of the second load unit for interchanging said load units, - a moving device arranged for moving and unloading the first load unit from the vehicle in a first direction and onto the top of the second load unit located next to the vehicle, characterized in that, - said moving device is further arranged for releasing the first load unit, and for gripping the second load unit below the first load unit and moving and loading said second load unit onto the vehicle so that said first load unit is still on the top of the second load unit at the beginning of the moving of the second load unit and so that said first load unit slides on the top and along the second load unit in said first direction during loading said second load unit onto the vehicle until the first end of the first load unit meets the second end of the second load unit, and - said landing device is configured to move said first end of said first load unit into a lower level than the second end of the second load unit after said first end of the first load unit has met said second end of the second load unit. - said moving device is further arranged for releasing the first load unit, and for gripping the second load unit below the first load unit and moving and loading said second load unit onto the vehicle so that said first load unit is still on the top of the second load unit at the beginning of the moving of the second load unit and so that said first load unit slides on the top and along the second load unit in said first direction during loading said second load unit onto the vehicle until the first end of the first load unit meets the second end of the second load unit, and - said landing device is configured to move said first end of said first load unit into a lower level than the second end of the second load unit after said first end of the first load unit has met said second end of the second load unit.