A bull bar is a steel or aluminium bar placed on the front side of your vehicle to protect it against damage from collision with any animal or pedestrian. They are popularly used in rural areas or aboriginal communities where most people deal with wildlife. A Holden Colorado bull bar can be used on all kinds of cars. Still, most commonly, they are used in SUVs or off-road vehicles as they shield from several minor collisions with other vehicles or any animal strikes while going off-road.