What is required for all commercial drivers to ensure road safety?

Answer: B — Pre-Trip Vehicle Inspection

A Pre-Trip Vehicle Inspection is essential for all commercial drivers as it ensures that the vehicle is in safe operating condition before it hits the road. This inspection allows the driver to identify any mechanical problems, defects, or safety issues that could lead to accidents or breakdowns during travel. By checking critical components such as brakes, tires, lights, and fluid levels, drivers can significantly reduce the risk of malfunctions that could endanger themselves or other road users. While having a valid insurance policy is important for financial protection in case of accidents, it does not directly contribute to the proactive safety measures of vehicle operation. Similarly, although a GPS navigation device can help drivers navigate efficiently, it does not have an impact on the mechanical safety of the vehicle itself. Regular vehicle washing is also not related to the operational safety of the vehicle, as it primarily concerns cleanliness rather than functionality. Therefore, the focus on conducting a Pre-Trip Vehicle Inspection emphasizes the responsibility drivers have to ensure their vehicle is safe and reliable for driving.