Liquid Surge & Braking Technique Practice Test, Test 2 of 2
Question 1 of 12
If a tank vehicle driver must make a quick stop to avoid a crash, what braking technique does the CDL manual recommend?
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Not quite.
Locking the brakes down as hard as possible is not the recommended emergency technique for tank vehicles; the manual specifically names controlled or stab braking instead.
The correct answer is B: Use controlled or stab braking.
49 CFR 383.119(a)-(b)
✓
Correct!
Correct. The manual states that to make a quick stop to avoid a crash, drivers should use controlled or stab braking, cross-referenced to the general emergency braking technique covered elsewhere in the manual.
49 CFR 383.119(a)-(b)
✗
Not quite.
Engine braking alone is not the technique described for an emergency stop in the manual; the recommended methods are controlled or stab braking using the service brakes.
The correct answer is B: Use controlled or stab braking.
49 CFR 383.119(a)-(b)
✗
Not quite.
The manual warns that steering quickly while braking can cause a tank vehicle to roll over, so combining sharp steering with firm braking is specifically discouraged, not recommended.
The correct answer is B: Use controlled or stab braking.