Low Pit Weighbridge sits above the road surface and requires ramps on either end to allow the vehicles to access the platform. Surface mounted scales require less civil foundation work than other types of scales, but more overall space. In general, guide rails that are fastened to the sides of the platform are necessary for surface mounted weighbridges. These rails aid in keeping vehicles centered on the bridge. This type of installation is better suited when the bridge may need to be shifted, or for temporary installations. By Low Pit Weighbridge one will have the access to typically depend on site requirements, such space availability.