Transfer trailer

A truck for transporting articles, said truck comprising:

• a tractor;
• and
• a transfer trailer defining a container for directly receiving articles from a loading apparatus, said trailer being removably attachable to said tractor for transporting the articles, said trailer comprising:
• a floor;
• a top covering spaced from said floor and adapted to substantially cover a top of said container;
• at least a pair of walls adapted to substantially cover respective sides of said container and extending substantially between said floor and said top covering, at least one of said pair of walls and said top covering being movable relative to said floor between a closed position and an opened position, wherein when said movable wall and said top covering are in said opened position, said trailer provides an opening into the top and the respective side of said container for directly receiving the articles from the loading apparatus;
• and
• a controller for controlling the movement of said movable wall and said top covering between said closed position and said opened position,
• wherein said top covering is hingedly attached to said movable wall and the other of said pair of walls along corresponding imaginary lines of attachment defining corresponding axes, said movable wall being rotatable about the axis defined by the imaginary line attaching said movable wall and said top covering and said top covering being rotatable about the axis defined by the imaginary line attaching said top covering and the other of said pair of walls.