A roof rack is a system of bars mounted on the roof of a vehicle, designed to carry extra cargo. They are commonly used for transporting items like bicycles, kayaks, or luggage, making them ideal for outdoor enthusiasts and travelers. Roof racks come in various styles and sizes to fit different vehicle models. Most roof racks consist of crossbars that attach to the vehicle's roof rails or directly to the roof. Accessories can be added to customize the rack for specific needs, such as bike carriers or cargo boxes. Proper installation and weight limits are essential for safety and performance.