MO CDL Combination Practice Test (2024)

1. If you have convex mirrors, be aware that:

everything appears smaller in a convex mirror than it would if you were looking at it directly.
in a convex mirror objects appears larger than they really are.
objects seem closer than they really are.

2. If the drive wheels begin to spin when accelerating, you should:

take your foot off the accelerator.
brake gently.
continue to accelerate.

3. On any upgrade, gravity:

4. When approaching a vehicle with a distracted driver, you should:

quickly pass the vehicle.
maintain your safe following distance.
change lanes quickly.

5. After a tire has been changed, the driver should stop a short while later to:

check the tightness of the nuts.
deflate the tire to 10 psi.
decrease tire pressure.

6. If you have a manual transmission, when stopping don't _______ until the engine rpm is down close to idle.

shift to second gear
push the clutch in
place the transmission in park

7. When the ______ closes, it stops any air from going out of the tractor.

8. Most heavy vehicles require ________ change gears.

9. If a drawbridge does not have a signal light or traffic control attendant, you should:

drive through the drawbridge with caution.
stop and look to make sure the draw is completely closed before crossing.
stop at least 5 feet before the draw of the bridge.

10. You are checking the tractor-trailer connection to make sure it is safe and secure. The landing gear should be:

raised slightly off the ground.
fully lowered.
fully raised.

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