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Safe Driving Free CDL Practice Tests
Page 11

Prepare For The Safe Driving Portion Of Your CDL Written Exams

Safe Driving Questions

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What does BAC stand for?
  • Blood Alcohol Concentration
  • Blue Algae Concentration
  • Blood Alcohol Collection
  • Binge Alcohol Concentration
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From The CDL Manual

The amount of alcohol in your body is commonly measured by the bloodalcohol concentration (BAC).

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What factors typically determine your blood alcohol concentration BAC?
  • Your weight
  • The amount of alcohol you drink
  • These are all things that determine your BAC
  • How fast you drink
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From The CDL Manual

What determines BAC:

BAC is determined by the amount of alcohol you drink (more alcohol means a higher BAC), how fast you drink (faster drinking means a higher BAC) and your weight (a small person does not have to drink as much to reach the same BAC).

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All of the following are classified as "a drink" and contain the same amount of alcohol except:
  • 12-oz glass of 5% beer
  • 12-oz glass of 12% wine
  • 5-oz glass of 12% wine
  • 1 1/2-oz shot of 80-proof liquor
Click here to look up the answer

From The CDL Manual

What constitutes a “drink”: A “drink” refers to the alcohol in a drink that affects human performance. It does not make any difference whether the alcohol comes from a couple of beers or two glasses of wine or two shots of hard liquor. All the following drinks contain the same amount of alcohol:

  • 12-oz. glass of 5% beer
  • 5-oz. glass of 12% wine
  • 1 1/2-oz. shot of 80-proof liquor
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Ways that drinking alcohol can affect the brain include:
  • It can keep drivers from knowing they are getting drunk
  • The person will eventually pass out
  • Increased alcohol intake will affect all these things
  • Judgement and self-control are decreased
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From The CDL Manual

Alcohol and the brain:

Alcohol affects more and more of the brain as BAC builds up. The first part of the brain affected controls judgment and self control. One of the bad things about this is it can keep drinkers from knowing they are getting drunk. As BAC continues to build up, muscle control, vision and coordination are affected more and more. Eventually, a person will pass out.

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All of the following are true of alcohol except:
  • Everyone who drinks is affected by alcohol.
  • A few beers are the same as a few shots of whiskey or a few glasses of wine.
  • Coffee and a little fresh air will help a drinker sober up.
  • Only time will help a drinker sober up – other methods just do not work.
Click here to look up the answer

From The CDL Manual

FALSE

  • Alcohol increases your ability to drive.
  • Some people can drink a lot and not be affected by it.
  • If you eat a lot first, you will not get drunk.
  • Coffee and a little fresh air will help a drinker sober up.
  • Stick with beer – it is not as strong as wine or whiskey.
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Some of the serious driving errors that can be caused by alcohol include:
  • Driving too fast or too slow
  • These things are all serious driving errors that can be caused by alcohol
  • Driving in the wrong lane
  • Running over the curb
Click here to look up the answer

From The CDL Manual

How Alcohol Affects Driving:

All drivers are affected by drinking alcohol. Alcohol affects judgment, vision, coordination and reaction time. It causes serious driving errors, such as:

  • Increased reaction time to hazards.
  • Driving too fast or too slow.
  • Driving in the wrong lane.
  • Running over the curb.
  • Weaving.
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When is it acceptable to use amphetamines to help you stay awake while driving?
  • Late at night
  • Only after driving for 8 hours
  • It is expressly prohibited
  • Early in the morning
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From The CDL Manual

Besides alcohol, other legal and illegal drugs are being used more often. Laws prohibit the possession or use of many drugs while on duty. They prohibit being under the influence of any “controlled substance,” an amphetamine (including “pep pills” and “bennies”), methamphetamine, narcotics or any other substance that can make the driver unsafe.

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What is the only acceptable cure for driver fatigue?
  • A pot of coffee
  • Pep pills
  • Cool air
  • Rest
Click here to look up the answer

From The CDL Manual

Pay attention to warning labels of legitimate drugs and medicines and to doctor’s orders regarding possible effects. Stay away from illegal drugs. Do not use any drug that hides fatigue — the only cure for fatigue is rest.

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Besides prescription drugs verified by a doctor as safe for driving, what other drugs are acceptable while driving?
  • Over-the-counter cold medicines
  • Amphetamines
  • Methamphetamines
  • Mixing drugs with driving is never recommended
Click here to look up the answer

From The CDL Manual

Pay attention to warning labels of legitimate drugs and medicines and to doctor’s orders regarding possible effects. Stay away from illegal drugs. Do not use any drug that hides fatigue — the only cure for fatigue is rest. Alcohol can make the effects of other drugs much worse. The safest rule is do not mix drugs with driving at all.

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In case of illness that prevents you from driving safely, you should:
  • Drink a lot of coffee until you feel better
  • Ask your dispatcher for the day off
  • Drive to the nearest place where you can safely stop until you feel you can drive safely
  • Immediately call for an ambulance
Click here to look up the answer

From The CDL Manual

Illness —

Once in a while, you may become so ill that you cannot operate a motor vehicle safely. If this happens, do not drive. However, in case of an emergency, you may drive to the nearest place where you can safely stop.

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