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Grade 9 Grade 10 Continuing Education

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Continuing Education Commercial Driving Questions

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Continuing Education Commercial Driving
Who has the sole responsibility for the vehicle being operated?
  1. the mechanic
  2. the META instructor
  3. the person with the keys
  4. the supervisor
Continuing Education Commercial Driving
The braking distance at 55mph on dry pavement with good brakes can take about 216 feet.
  1. True
  2. False
Continuing Education Commercial Driving
What is the purpose of the emergency line ?
  1. it supplies air to the trailer air tanks.
  2. controls the emergency brakes
  3. all of the above
Continuing Education Commercial Driving
If the tractor protection valve doesn’t work properly, what would cause the emergency brake to come on ?
  1. when the air pressure falls into the pressure range specified by the manufacturer.
  2. when parking brakes are released
  3. an air hose or trailer brake leak could drain all the air from the tractor.
Continuing Education Commercial Driving
How can you test that air flows to all trailers?
  1. Use the tractor parking brake to hold the vehicle. Wait for air pressure to reach normal, then push in the red “trailer air supply” knob. Use the trailer handbrake to provide air to the service line. Go to the rear of the rig. Open the emergency line shut-off valve at the rear of the last trailer. Close the emergency line valve. Open the service line valve to check that service pressure goes through all the trailers, and then close the valve. If you do NOT hear air escaping from both lines, check that the shut-off valves on the trailer(s) and dolly(ies) are in the OPEN position. You MUST have air all the way to the back for all the brakes to work.
  2. Open the service line valve to check that service pressure goes through all the trailers
  3. Go to the rear of the rig. Open the emergency line shut-off valve at the rear of the last trailer. You should hear air escaping, showing the entire system is charged.
Continuing Education Commercial Driving
At what pressure range does the trailer air supply control pop out ?
  1. 10-100 psi
  2. 10-20 psi
  3. 20-45 psi
Continuing Education Commercial Driving
The average perception time for an alert driver is                 second at 55 mph.
  1. 1 3/4
  2. 2 3/5
  3. 5
Continuing Education Commercial Driving
The tractor protection valve is controlled by the,trailer air supply,control valve in the
cab.
  1. True
  2. False
Continuing Education Commercial Driving
What is the purpose of the DECS on equipment with diesel engines?
  1. Improve fuel economy.
  2. Limit engine RPMs.
  3. Reduce emissions.
  4. Improve performance.
Continuing Education Commercial Driving
What does the pressure in the service line do?
  1. it tells how much presure the relay valve should send to the brakes
  2. its controled by the brake pedal
  3. its controlled by the trailer hand brake
  4. all of the above
Continuing Education Commercial Driving
When driving how far ahead should you look?
  1. 12- 15 seconds
  2. 30-60 seconds
  3. 5-15 seconds
  4. 2-60 seconds
Continuing Education Commercial Driving
Describe what the service line is for.
  1. carries air, which is controlled by the foot brake or the trailer hand brake.
  2. controlls the brakes
  3. keeps the engine from overheating
Continuing Education Commercial Driving
How do you maintain a speed that is not to fast when going down hill?
  1. weight, length of hill, steepness of hill, road conditions, weather
  2. use brakes
  3. do not accelerate
Continuing Education Commercial Driving
How do you correctly test a trailers emergency brakes ?
  1. Check under and around the vehicle for signs of any leaking. Don’t carry liquids or gases in a leaking tank. To do so is a crime.
  2. Charge the trailer air brake system and check that the trailer rolls freely. Then stop and pull out the trailer air supply control or place it in the “emergency” position. Pull gently on the trailer with the tractor to check that the trailer emergency brakes are on.
  3. On tank trailers, if your drive wheels or trailer wheels begin to skid, your vehicle may jackknife.
Continuing Education Commercial Driving
What is the service interval for the engine oil change?
Continuing Education Commercial Driving
How many shift service points are there for the front wheel bearings?
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