Final answer:
The responsibility for checking the security of a trailer before loading or unloading falls on the driver or the workers involved in the transportation or logistics company. They should inspect the trailer's doors, locks, and seals as well as its mechanical components to ensure safety and security.
Step-by-step explanation:
The responsibility for checking the security of a trailer before loading or unloading typically falls on the driver or the workers involved in the transportation or logistics company. It is their job to ensure the trailer is in proper condition and meet safety standards.
When checking the security of a trailer, the driver or workers should inspect the trailer's doors, locks, and seals to prevent any tampering or unauthorized access to the cargo. They should also inspect the trailer's tires, brakes, lights, and other mechanical components to ensure they are functioning properly.
By conducting thorough checks, they can identify any potential security risks, such as damaged equipment or signs of tampering, and take appropriate measures to address them, ensuring the safety and security of the cargo being transported.