Question When a combination vehicle goes around a corner: Answers The vehicle must use at least two lanes. The front and rear wheels will move in different paths. It is best to allow the rear wheels to drive over the curb. Explanation When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. This effect is especially pronounced on vehicles with trailers. This questions appears in the following tests: Arkansas Double Idaho Combination Kentucky Combination Maryland Combination Minnesota Tank Minnesota Air Brakes South Carolina Combination South Dakota Combination Tennessee Combination Utah Combination Vermont Combination