Why is it crucial to check the trailer's brake lights before a trip?

Checking the trailer's brake lights before a trip is crucial because it ensures that they are functioning correctly, which is essential for preventing collisions from behind. When driving a combination vehicle, it is vital that other drivers can see when you are slowing down or stopping. If the brake lights are not operational, following vehicles may not have adequate warning, increasing the risk of rear-end accidents. Functional brake lights communicate your actions clearly to other motorists, allowing them to react appropriately and safely.

While ensuring the trailer is properly attached is important for safe towing and legal compliance, the specific function of the brake lights is directly linked to preventing collisions. This emphasizes their critical role in road safety. Enhancing visibility during nighttime driving is also valuable, but the primary focus of checking brake lights is to ensure effective communication of braking intentions to other drivers.