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CDL Practice Test: Safe Driving

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CDL Practice Test: Safe Driving

Safe Driving Questions

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Good Luck!

A complete stop is required at a railroad crossing when:
  • All commercial vehicles are required to stop at all railroad crossings
  • Stopping before a railroad crossing is never allowed
  • Commercial vehicles only need to stop at railroad crossings without gates
  • The nature of the cargo makes a stop mandatory under state or federal law
This is a question from page 26 - click here to look up the answer

Quote From Page 38 Of The Illinois CDL Manual:

A complete stop is required at a grade crossing when:

  • The nature of the cargo makes a stop mandatory under state or federal regulations.
  • Such a stop is otherwise required by law.
Next
The following emergency equipment is required on all commercial motor vehicles except:
  • All of these are required
  • First Aid Kit
  • Three red reflective triangles
  • Fire Extinguisher
This is a question from page 8 - click here to look up the answer

Quote From Page 14 Of The Illinois CDL Manual:

Emergency Equipment: Vehicles should be equipped with the following emergency equipment:

  • Fire extinguisher(s)
  • Spare electrical fuses (unless equipped with circuit breakers)
  • Warning devices for parked vehicles (e.g., three reflective warning triangles)

TruckingTruth's Advice:

It is almost guaranteed that this type of question will show up on both your written exam as well as the pre-trip exam. The 3 required emergency equipment items absolutely must be memorized!

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Next
When a driver sees a roadway hazard, how long will it take for the drivers brain to process the situation (perception time)?
  • 1/2 second
  • 1-3/4 second
  • 1 second
  • 1/8 second
This is a question from page 19 - click here to look up the answer

Quote From Page 29 Of The Illinois CDL Manual:

The average perception time for an alert driver is 1 3/4 seconds. At 55 mhp this accounts for 142 feet travelled.

TruckingTruth's Advice:

Perception time and distance must be memorized.

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Next
During a drive-wheel braking skid, you should:
  • Turn the steering wheel in the opposite direction you want the vehicle to go
  • None of these answers are correct
  • Keep the steering wheel firm and straight
  • Apply more brake pressure to slow the vehicle down
This is a question from page 30 - click here to look up the answer

Quote From Page 43 Of The Illinois CDL Manual:

Rear-wheel braking skids occur when the rear-drive wheels lock. Because locked wheels have less traction than rolling wheels, the rear wheels usually slide sideways in an attempt to "catch up" with the front wheels. In a bus or straight truck, the vehicle will slide sideways in a "spin out." With vehicles towing trailers, a drive wheel skid can let the trailer push the towing vehicle sideways, causing a sudden jackknife.


Do the following to correct a drive-wheel braking skid:




       
  • Stop braking This will let the rear wheels roll again and keep the rear wheels from sliding any further. If on ice, push in the clutch to let the wheels turn freely.

  •    
  • Turn quickly When a vehicle begins to slide sideways, quickly steer in the direction you want the vehicle to go down the road. You must turn the wheel quickly.

  •    
  • Countersteer As a vehicle turns back on course, it has a tendency to keep right on turning. Unless you turn the steering wheel quickly the other way, you may find yourself skidding in the opposite direction.



Learning to stay off the brake, turn the steering wheel quickly, push in the clutch and countersteer in a skid takes a lot of practice. The best place to get this practice is on a large driving range or "skid pad."

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Next
What is the advantage to moving right instead of left when an oncoming vehicle veers into your lane?
  • All of these answers are correct
  • If a shoulder is present, it is unlikely anybody will be next to your right side
  • The oncoming vehicle may try to steer back into the correct lane at the last second
  • If you're blocked on both sides of your vehicle, you will avoid forcing the vehicle on your left into oncoming traffic
This is a question from page 28 - click here to look up the answer

Quote From Page 42 Of The Illinois CDL Manual:

If an oncoming driver has drifted into your lane, a move to your right is best. If that driver realizes what has happened, the natural response will be to return to his/her own lane. If something is blocking your path, the best direction to steer will depend on the situation.

  • If you have been using your mirrors, you will know which lane is empty and can be safely used.
  • If the shoulder is clear, going right may be best. No one is likely to be driving on the shoulder, but someone may be passing you on the left. You will know if you have been using your mirrors.
  • If you are blocked on both sides, a move to the right may be best. At least you will not force anyone into an opposing traffic lane and a possible head-on collision.
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Next
Which of the following does not need to be checked on the front suspension?
  • Shackles
  • Holdbacks
  • U-Bolts
  • Spring hangers
This is a question from page 11 - click here to look up the answer

Quote From Page 20 Of The Illinois CDL Manual:

Left front suspension:

- Condition of spring, spring hangers, shackles, u-bolts.
- Shock absorber condition.

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Next
Who is responsible for performing a daily vehicle inspection?
  • The driver is always responsible for completing their own daily inspections
  • Any CDL holder can deem a vehicle safe to operate as long as they sign off on the daily inspection report
  • A certified mechanic may do the vehicle inspection instead of the driver
  • While it's important to perform daily vehicle inspections, there are no federal regulations requiring inspections be done on each day the vehicle is driven
This is a question from page 7 - click here to look up the answer

Quote From Page 13 Of The Illinois CDL Manual:

The most important aspect of traffic safety for yourself and others who share the road with you is that you personally inspect your vehicle. A vehicle defect found during an inspection could save you problems later. You could have a breakdown on the road that will cost you time and money, or even worse, an accident caused by the defect.

Federal and state laws require that drivers inspect their vehicles. Federal and state inspectors also may inspect your vehicles. If they judge a vehicle to be unsafe, they will put it "out of service" until it is repaired.

TruckingTruth's Advice:

A daily vehicle inspection is crucially important. Many drivers will forgo an inspection if they are pressed for time, but this is extremely dangerous. You are not safe to drive until you've done an inspection of your vehicle.

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Next
Which of the following best describes Braking Distance?
  • None of these accurately describe Braking Distance
  • The distance it takes to stop once the brakes are applied
  • The distance your vehicle travels from the time your eyes see a hazard until your brain recognizes it
  • The distance traveled from the time your brain tells your foot to move from the accelerator until your foot is actually pushing the brake pedal
This is a question from page 19 - click here to look up the answer

Quote From Page 29 Of The Illinois CDL Manual:

Braking Distance is the distance it takes to stop once the brakes are applied. At 55 mph on dry pavement with good brakes, it can take a heavy vehicle about 170 feet and about 4 1/2 seconds to stop

TruckingTruth's Advice:

Make sure you memorize the definition of braking distance as this will likely show up on your written exam. You should also memorize braking time as well.

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