What should you do before loading or unloading a trailer at a loading dock?

Before loading or unloading a trailer at a loading dock, ensure that the area is clear of obstacles and that the dock is properly aligned with the trailer. Verify the weight distribution and secure the trailer with wheel chocks and safety cones to prevent movement. Additionally, check that all required safety equipment, such as gloves and hard hats, is in place and that personnel are aware of the operation to ensure a safe process.