Which crash type accounts for more than half of truck driver deaths in crashes, according to the manual?

Rear-end collisions with passenger cars

Head-on collisions at railroad crossings

Collisions with fixed objects at night

Which two actions does the manual name as helping to prevent a rollover?

Keep cargo close to the ground and drive slowly around turns

Fill the fuel tanks completely and avoid using the trailer hand valve

Keep the load toward one side and speed up through curves

Keep cargo close to the ground and drive slowly around turns

Raise the landing gear fully and brake only with the engine

What following distance does the manual give for a combination vehicle at speeds up to 40 mph?

At least one second for each 10 feet of vehicle length

At least one second for each 40 feet of vehicle length

At least two seconds no matter how long the vehicle is

At least one second for each 10 feet of vehicle length

At least one car length for each 10 mph

CDL Combination Vehicles Endorsement/Topics/Driving Rollover

Driving Rollover practice test: free CDL Combination Vehicles Endorsement questions

Driving Rollover covers 15 questions in the QuizCram bank (15% of all questions), ranking as the third biggest domain for the CDL combination vehicles endorsement exam. Questions are written against the official Original practice questions on the combination vehicles endorsement, written from the federal knowledge requirements in 49 CFR Part 383 and the public CDL manual facts. The real test is a multiple-choice knowledge test, and you need 80% to pass. Try the 3 free sample questions below to test your understanding of these core rules.

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15 questions, the third biggest topic. The ring is its size next to the biggest.

Try 3 sample Driving Rollover questions

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Driving rollover1 of 3
Which crash type accounts for more than half of truck driver deaths in crashes, according to the manual?
The answer
Answer: B. The manual says more than half of truck driver crash deaths come from rollovers. Piling more cargo up in a truck raises its centre of gravity, and that makes it easier to turn over. Rear-end crashes, head-on railroad collisions and fixed-object crashes are real risks, but the manual singles out rollovers as the main cause of truck driver deaths.
Source: 6.1.1 - Rollover Risks
Driving rollover2 of 3
Which two actions does the manual name as helping to prevent a rollover?
The answer
Answer: C. Low cargo keeps the centre of gravity down, and a lower speed in turns reduces the sideways force on the rig. Both reduce the chance of tipping. Filling the tanks, loading to one side, speeding through curves or braking only with the engine do nothing to keep the load low or slow the rig in turns.
Source: 6.1.1 - Rollover Risks
Driving rollover3 of 3
What following distance does the manual give for a combination vehicle at speeds up to 40 mph?
The answer
Answer: C. The manual's rule is at least one second for each 10 feet of vehicle length, with one more second added when you go faster than 40 mph. Forty feet per second, a flat two seconds or a car length per 10 mph ignore how much longer a rig is than a car and so give too little room.
Source: 6.1.2 - Steer Gently

Quick answers on Driving Rollover

How many Driving Rollover questions are on the CDL Combination Vehicles Endorsement?

QuizCram covers 15 practice questions in the Driving Rollover domain, mapped directly to the official examination blueprint.

What is the passing score for the CDL Combination Vehicles Endorsement?

The benchmark score is 80% (Multiple-choice knowledge test · 80% to pass (49 CFR 383.135) · item count set by your state).

Are these Driving Rollover questions written from official sources?

Yes. All questions on QuizCram are written against official handbooks and blueprint specifications with legal citations.