Which statement about berm height is correct for normal use?

Which statement about berm height is correct for normal use?

• A. Berms should be as high as the axel of the tallest piece of Mobile equipment
• B. Berms should be twice the axle height
• C. Berms height is independent of equipment
• D. Berms height should be equal to the driver's seat height

Answer: (A)

Edge barriers, or berms, are there to keep vehicles from leaving the road and to contain loads during normal operations. The safest and most practical standard is to make berms as high as the axle height of the tallest piece of mobile equipment that will use the road. This gives a containment height that matches the largest machine’s clearance, accounting for suspension, tire deflection, and loads. It ensures that, even if a vehicle leans or hits a bump, the berm provides enough height to prevent the vehicle from tipping over the edge. Options suggesting twice the axle height, that berm height is independent of equipment, or tying berm height to the driver’s seat don’t reflect the real containment needs for the equipment on the road.

Edge barriers, or berms, are there to keep vehicles from leaving the road and to contain loads during normal operations. The safest and most practical standard is to make berms as high as the axle height of the tallest piece of mobile equipment that will use the road. This gives a containment height that matches the largest machine’s clearance, accounting for suspension, tire deflection, and loads. It ensures that, even if a vehicle leans or hits a bump, the berm provides enough height to prevent the vehicle from tipping over the edge. Options suggesting twice the axle height, that berm height is independent of equipment, or tying berm height to the driver’s seat don’t reflect the real containment needs for the equipment on the road.