What should be done before descending a steep hill?

Before descending a steep hill, shifting into a lower gear is essential for maintaining control of the vehicle. By using a lower gear, the engine can help slow the bus down through compression, which reduces the reliance on the brakes. This is particularly important for larger vehicles like buses, which can gain speed quickly on a descent due to their weight. Braking continuously can lead to overheating and reduced brake effectiveness, also known as brake fade.

Using a lower gear allows for a controlled descent, ensuring that the driver can maintain a safe speed while also being ready to respond to any hazards that may arise. This technique not only enhances safety for the bus driver and passengers but also protects the mechanics of the braking system, ultimately leading to a safer driving experience overall.