During an en-route inspection, what should you check regarding cargo?

During an en-route inspection, checking the cargo doors and securement is crucial for several reasons. The integrity of the cargo is vital for safe transportation; any loose or unsecured loads can shift while the vehicle is in motion, potentially leading to loss of control of the vehicle, accidents, or cargo damage. Ensuring that the cargo doors are properly closed and locked prevents cargo from falling out or being exposed during transit, which also helps avoid hazards for other road users.

In addition, frequently inspecting the cargo can help identify any issues that may arise during the journey, such as load shifting or wear on securing mechanisms. By making this a standard part of your en-route inspections, you are not only ensuring compliance with regulations but also promoting overall safety for yourself and others on the road. The other options listed pertain to vehicle systems that may be important for operation, but they do not directly address the safety and compliance concerns related to securing cargo, which is the priority during an en-route inspection.