How should cargo be secured to prevent movement?

• A. Rely on the weight of the cargo only.
• B. Use appropriate tie-downs, lashings, and blocking; ensure restraint devices are not damaged.
• C. Leave space in the trailer for movement.
• D. Use only a single strap to secure.

Answer: (B)

The key idea is that securing cargo requires a proper combination of restraint methods, not just relying on weight. Use appropriate tie-downs, lashings, and blocking to hold the load in place in all directions. Tie-downs and lashings provide horizontal restraint and must be rated for the cargo, placed correctly, and kept tight without damage. Blocking and bracing prevent forward, backward, and vertical movement, especially when the vehicle accelerates, decelerates, or encounters bumps. It’s crucial that all restraint devices are undamaged, because damaged straps can fail under load. Leaving space in the trailer invites movement, and using only a single strap is not enough to control the load in dynamic driving conditions. Together, these elements keep the cargo stable and prevent shifting during transport.