Which safety features should be regularly checked on a combination vehicle?

Regularly checking the brakes, lights, and safety chains on a combination vehicle is crucial for ensuring safety and compliance with regulations. The brakes are vital because they need to function correctly to stop the vehicle efficiently, especially given the weight and size of combination vehicles, which can include trucks with trailers. Properly functioning lights are essential for visibility and communication with other drivers on the road, particularly during low-light conditions or adverse weather. Safety chains are important for connecting the trailer securely to the towing vehicle; they act as a backup in case the hitch fails, preventing the trailer from completely disconnecting and potentially causing accidents.

While other options mention safety components, they either focus on items that are less critical to the immediate operation of a combination vehicle or are not typically subject to the same level of scrutiny as brakes, lights, and safety chains. This emphasizes the importance of checking the most impactful safety features to maintain the overall integrity and safety of operating a combination vehicle.