Roof rack

[2] They allow users of an automobile to transport objects on the roof of the vehicle without reducing interior space for occupants or the cargo area volume limits, such as in the typical car's trunk design.

These include car top weatherproof containers; some are designed for specific cargo such as skis or luggage.

These gutters are formed by the welded flange (raised rim or lip) on the left and right sides of the car's metal roof panel.

[7] Some bars are designed with a lower drag coefficient or have a wind deflector at the front to reduce this problem.

Pickup truck racks form an extended cargo platform that allows transportation of oversized items.