CDL Practice Test Wrong Questions Answered

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Which type of vehicle is more likely to get stuck on a railroad-highway crossing?

Car Carriers

Road rage is the act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others.

False

You should use low beams whenever you can.

False

What is a pull-up?

Pulling forward while backing a trailer to reposition it.

How do you find out how many seconds of following distance space you have?

Wait until the vehicle ahead passes a clear landmark, then count off the seconds until you reach the same spot.

Under-loaded front axles can make the steering axle weight too light to steer safely.

true

Too much weight on the drive axle can cause hard heavy steering.

false

Your CDL will be disqualified after three or more convictions of any state law on texting or operating a hand held telephone while operating a CMV.

false

If you go twice as fast, your stopping distance increase by how many times?

four

How far ahead does the manual say you should look while driving?

12 to 15 seconds, at highway speeds its about a quarter of a mile.

How long does it take for a typical tractor trailer unit to clear a single rail road track?

14 seconds

If you are driving a 30 foot vehicle at 55 mph, how many seconds of following distance should you allow?

4 seconds

How can you avoid the effects that wet brakes can cause?

All of the above (awkward)

This is the procedure for coming down long steep grades.

Brake hard enough to feel a slowdown, when your speed has been reduced to 5 mph below your safe speed, release the brakes. When your speed has increased to your safe speed, repeat these steps.

Name two situations where legal maximum weights may not be safe to haul?

During bad weather or in mountains

What is an advantage of going right instead of left around an obstacle?

If you are blocked on both sides, a move to the right will not force anyone into an opposing traffic lane and a possible head on collision.

For what four things related to cargo are drivers responsible?

Inspecting your cargo, recognizing overloads, properly secured cargo, cargo does not restrict emergency equipment

Which of the following best describes the "Heavy Vehicle Formula"?

One second for each 10 feet of vehicle length at speeds below 40 mph adding 1 second for speeds over 40 mph.

What three things add up to total stopping distance?

Perception Distance + Reaction Distance + Braking Distance.

What factors determine your selection of a safe speed when going down a long steep downgrade?

Total weight of the vehicle and cargo, length of the grade, steepness of the grade, road conditions, weather.

What should wheel-bearing seals be checked for?

leaks

What must you check before transporting a sealed load?

that the load is properly secured


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