What is the significance of checking the trailer brakes?

The significance of checking the trailer brakes lies in ensuring that they engage properly when the vehicle slows down. Proper engagement of the brakes is critical for safety and control while driving. If the trailer brakes do not engage correctly, it can lead to extended stopping distances, reduced vehicle handling, and an increased risk of accidents, especially under heavy loads. Ensuring that the brakes are functioning well allows for effective deceleration and stopping, which is vital for the safety of the driver, passengers, and other road users.

While other aspects such as effective slowing down and preventing tire wear are important factors in overall vehicle maintenance, the primary concern during a pre-trip inspection is ensuring the braking system's reliability and responsiveness. This is especially true in larger vehicles like those covered under Class B CDL guidelines, where the ramifications of brake failure can be severe.