Simply so, can I put roof bars on my car?
Roof bars fit onto the roof of yourvehicle, using a variety of connecting systems. Fitted roofbars are perfect if you're a regular camper, cyclist, or justneed to transport stuff, as they allow you to move your bike,tents, bags and other equipment out of the boot or back seatand onto the roof.
Similarly, what is the use of roof rails in cars?
Roof rails are used to carry bulky cargoor sporting equipment overhead that can use specialroof mounts which can be fixed on to these rails.They are a modern version of the old 'luggage carrier' except thatthey are designed to be mounting points rather thancarriers.
Factory installed flush rails run from front toback on your vehicle and are flush to the roodwithout any space between the rail and the roof. There istypically a inner and/or outer groove that allows connection of acrossbar.