When pulling a trailer down a long steep hill, what is the recommended action?

Answer: C — Both drive in a low gear and keep in the right lane

When pulling a trailer down a long steep hill, the recommended action is to drive in a low gear and keep in the right lane. Engaging a lower gear helps in controlling the speed of the vehicle and trailer combination without over-relying on the brakes. This reduces the risk of brake fade, which can occur when the brakes are overheated from continuous use. Additionally, staying in the right lane is crucial for safety, as it allows you to maintain slower speeds and makes it easier for faster-moving vehicles to pass on the left. Using a low gear effectively utilizes engine braking, which helps maintain a safe speed while descending the hill. This is particularly important for larger vehicles, like those pulling trailers, as they tend to have more momentum and require greater control when navigating steep declines. Moreover, keeping to the right lane is not only a matter of courtesy but also aligns with safe driving practices when dealing with larger vehicles on inclines.