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California Commercial Drivers License (CDL) Practice Test 1

1. If you are stopped on a one-way or divided highway, you should place reflective triangles at:
  10 feet, 100 feet, and 200 feet toward approaching traffic.
  25 feet, 100 feet, and 250 feet toward approaching traffic.
  50 feet, 100 feet, and 300 feet toward approaching traffic.
2. A driver should look _______ ahead of the vehicle while driving.
  2 - 5 seconds
  5 - 10 seconds
  12 - 15 seconds
3. Containerized loads:
  are exempt from hazardous materials restrictions.
  are exempt from weight limit restrictions.
  can generally be used when freight is also being carried by either ship, rail, or both.
4. Water can safely be used on which of these fires?
  Chemical
  Gasoline
  Neither of the above.
5. A pre-trip inspection should be completed:
  at least once a week.
  if any problems occurred the last the time the vehicle was operated.
  before operating the vehicle.
6. Three things add up to the total stopping distance for your vehicle. They are:
  perception distance, reaction distance, braking distance.
  observation distance, reaction distance, slowing distance.
  perception time, reaction time, vehicle braking capacity.
7. Which of the following is the correct term for a long commercial vehicle\'s tendency to swing wide on turns?
  Sidetracking.
  Offtracking
  Fishtailing
8. While doing the pre-trip inspection on your vehicle\'s steering and exhaust system you found the following problems. Which one, if any, should be fixed before you drive the vehicle?
  Too many vertical stacks.
  Oil on the tie rod.
  Play in the steering wheel of more than 15 degrees (3 inches on a 20-inch steering wheel).
9. Which of the following statements is true when you are performing a pre-trip inspection on your brakes and suspension system?
  Brake shoes should be free of oil, grease, and brake fluid.
  One missing leaf spring is not dangerous.
  A cracked spring hanger is not dangerous.
10. When a heavy fog occurs you should:
  use high beams for best visibility.
  park off to the right side of the road with you parking lights on.
  park at a rest area or truck stop until the fog has lifted.
11. Which of the following statements is true about overhead clearance?
  Posted signs for overhead clearance are always correct.
  Paving a road does not affect the clearance height under bridges or overpasses.
  Cargo weight may change the height of your vehicle.
12. When you are parked at the side of the road at night, you must:
  warn others by turning on your 4-way emergency flashers.
  put your warning devices out within 15 minutes.
  use your left turn signal lights to give warning to other drivers.
13. What should you do when you are driving at night?
  Make sure you are driving slow enough so you can stop within the range of your headlights in an emergency.
  Roll down your window so that the fresh air will help keep you awake.
  If you are sleepy, drink coffee or other caffeine products.
14. When a coolant container is part of a pressurized system, you can:
  check the coolant level of a hot engine.
  safely remove the radiator cap and add coolant while the engine is hot.
  use water only in the cooling system.
15. You are exiting a highway using an offramp that curves downhill and you are driving a heavy vehicle. You should:
  do nothing because the posted speed limit for the offramp is usually 10 miles per hour below the safe speed limit for the offramp.
  slow to a safe speed before the curve.
  ) downshift after you are in the curve.
16. The term \"Gross Combination Weight\" refers to:
  total weight of a powered unit and the trailer.
  total weight of the trailer and the load.
  total weight of a powered unit, the trailer and the cargo.
17. A broken exhaust system is dangerous because:
  Exhaust noise will damage the driver\'s ears.
  Toxic fumes and gasses could enter the cab or sleeper berth.
  The leaking exhaust smoke pollutes the air.
18. You are about to go down a long, steep, downhill grade in a new truck. You should:
  use a lower gear than you would use to climb the uphill grade.
  use the same gear you would use to climb the uphill grade.
  use a higher gear than you would use to climb the uphill grade.
19. Which of these items is checked in a pre-trip inspection?
  Cargo securement.
  Whether all vehicle lights are working and are clean.
  Both of the above.
20. You should plan ahead when you park your vehicle so that:
  it will be very easy for you to check your vehicle before you get back on the road.
  you are only required to pull forward when you leave.
  you don\'t need to back up more than ten feet.