How is a load protruding from the rear or front of the vehicle marked?
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The correct answer: At the front of the vehicle the load is marked with a white light-reflecting triangle, and at the rear it is marked with a white triangle with red light-reflecting edges.
A load protruding at the front is marked with a white light-reflecting triangle, and a load protruding at the rear with a white triangle with red light-reflecting edges. This lets other drivers see the load from both directions.