Foldable loading bay cover for a vehicle

A loading bay cover for a vehicle, the loading bay cover comprising:

• a cover unit including a plurality of slats, wherein respective upper end portions of preceding and following slats and respective lower end portions thereof are alternatingly connected, and wherein the plurality of slats are configured to be folded and unfolded to open or cover loading bay, respectively, of a vehicle;
• a main rail in the vehicular loading bay along a direction in which the cover unit is unfolded, wherein the main rail is configured to guide the lower end portions of the plurality of slats and to guide the upper end portions of the plurality of slats in a section where some of the plurality of slats are fully unfolded;
• and
• a guide rail branching off from the main rail, wherein the guide rail is generally parallel with the main rail in a section where the cover unit is fully folded and guides the upper end portions of the plurality of slats when the cover unit is folded.