During a pre-trip inspection, what should you check regarding your trailer's lights?

Answer: A — Ensure all lights and signals are operational

Ensuring that all lights and signals are operational during a pre-trip inspection is essential for safety and compliance with regulations. Functional lights are critical for communicating intentions to other drivers on the road, such as stopping, turning, and changing lanes. This includes not only the brake lights but also turn signals, headlights, and marker lights on both the tractor and the trailer. If any lights are inoperative, it could lead to dangerous situations or traffic violations. Therefore, thoroughly checking that every light and signal is working properly helps prevent accidents and ensures smooth operation during your trip. Proper visibility and communication are fundamental aspects of safe driving, especially when operating doubles or triples, which can present additional challenges on the road. Thus, conducting a comprehensive check of all lights enhances overall safety for the driver and other road users.