Question 36 of 120

Why is sudden braking especially risky for a tank vehicle that is already partway down a steep grade?

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The grade and the liquid's forward surge combine, adding to the forces the brakes already have to overcome
Sudden braking is actually safer on a grade than on flat ground, since gravity helps slow the vehicle faster
Grades have no real effect on liquid surge
Surge only occurs on flat, straight roads

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Correct answer to question 36 (Tank Vehicles): The grade and the liquid's forward surge combine, adding to the forces the brakes already have to overcome

Why

Gravity is already pulling the loaded vehicle downhill, and sudden braking adds the liquid's own forward momentum on top of that, which is more than a hard brake application on flat ground would face.

Updated: November 2026

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Why is sudden braking especially risky for a tank vehicle that is already partway down a steep grade?

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