There are three ways of determining the capacity of a dock leveler. The first is static load – the amount of standing (non-moving, non-impact) weight the dock leveler will support. The second factor is rollover capacity – the amount of moving weight the leveler will support in its closed and fully supported position. The third is dynamic load – this is a measure of the force the load applies to the leveler as it impacts the leveler in a raised position. The dynamic rating is a combination of the weight of the lift vehicle and its load, its speed and the angle of the leveler above dock. Dynamic force increases as the grade increases, therefore, a longer dock leveler will handle greater loads, because the dynamic impact is less.