What is the correct method to control speed when a heavy vehicle is going downhill?
4 Answers
Shift the transmission to a lower gear, use engine braking, and apply the brakes simultaneously to keep the speed within a reasonable range. Switch the vehicle to manual mode, shift to 3rd gear in manual mode, and use engine braking in combination with the brakes.
When driving a heavy vehicle down a long slope, my biggest concern is losing control of the speed. With years of truck driving experience, I always shift to a lower gear in advance, such as second or third gear, to let the engine assist in deceleration. This helps reduce brake usage and prevents brake fade due to overheating. Before descending, I check the brake system to ensure it's functioning properly. During the descent, I use intermittent braking as an aid rather than continuously pressing the brake pedal. Maintaining a steady speed is crucial—avoid letting the speed get too high, especially when navigating turns, as it increases the risk of accidents. Planning the route and staying calm are essential; safety should always come first, protecting both myself and others on the road.
As an experienced driver, when dealing with long downhill slopes, I first downshift to a lower gear, such as first or second gear, using engine braking to control speed. At the same time, I utilize the exhaust brake system to assist in deceleration. Avoid relying solely on the brakes, as prolonged use can lead to overheating and failure. Maintain a reasonable speed, observe road conditions and changes in gradient. The technique of intermittent braking is very practical and can be effectively combined to manage speed. Regularly maintain the vehicle and check brake pad wear to prevent sudden issues.
When driving down a steep slope, I use lower gears to manually control the speed, such as shifting to third gear in manual mode. This allows the engine to naturally decelerate and reduces the burden on the brakes. I also recommend installing an anti-lock braking system or auxiliary brake to enhance safety. To avoid brake fade, the method is to apply intermittent braking. Maintain a controlled speed without exceeding the limit and keep a safe distance from the vehicle ahead, especially in rainy or snowy conditions. Stay calm and slow down in advance when entering the slope.
