Operation & Safety第 49 / 60 题
What is the most important thing to do to control your speed on a long, steep downgrade?
a.Ride the brakes lightly the whole way down
b.Shift into neutral and coast
c.Use a low gear so the engine helps hold the vehicle back
d.Pump the brakes continuously as fast as possible
解析
The most important factor on a long downgrade is to select a low gear before starting down, so engine braking helps control your speed. The proper braking technique is then used only to supplement the low gear. Being in the right gear keeps the brakes from overheating and fading.
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同考点相关题目
- The total stopping distance for an air brake vehicle includes which of the following?
- What is brake lag in an air brake system?
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- What is the proper braking technique (snub braking) on a long downgrade?
- On a vehicle with air brakes, when is the proper time to release the brakes during snub braking on a downgrade?
- Compared to a car, how does the stopping distance of a heavy vehicle with air brakes change as weight and speed increase?