New Hampshire CDL — General Knowledge: Alcohol & Drugs Practice Test

Question 1

On the manual's table of BAC effects, at which level is the driver described as less alert, with coordination impairment beginning?

Accepted Answer

.05 — At .05 the table lists noticeable relaxation, with the driver less alert and coordination starting to suffer. That is below the .08 drunk driving limit.

Answer

.02

Answer

.15

Answer

.10

Question 2

At night you suspect you may be getting sleepy. What quick self-check does the manual suggest, if you can do it safely?

Accepted Answer

Look at yourself in a mirror, and stop driving if you look sleepy — People often miss how close to sleep they are. The manual suggests checking your face in a mirror. A sleepy look or a sleepy feeling means stop driving, because sleep is the only safe cure.

Answer

Count backward from 100

Answer

Turn the radio up

Answer

Speed up to stay alert

Question 3

What does the manual call the safest rule about drugs and driving?

Accepted Answer

Do not mix drugs with driving at all — After warning about labels, doctor's orders and illegal drugs, the manual states the safest rule plainly: do not mix drugs with driving at all.

Answer

Take only half the labeled dose before driving

Answer

Use stimulants only on night runs

Answer

Wait one hour after taking any medicine

Question 4

The manual compares the way fatigue impairs vision and judgment to what?

Accepted Answer

Alcohol and drugs — Fatigue is described as impairing your vision and judgment in the same way alcohol and drugs do.

Answer

A dirty windshield

Answer

Bright sunlight

Answer

A heavy load

Question 5

Once alcohol enters the bloodstream, where does the manual say it is carried?

Accepted Answer

To the brain — Alcohol passes straight into the blood and travels to the brain. Only afterward does most of it reach the liver.

Answer

To the lungs

Answer

To the stomach

Answer

To the kidneys

Question 6

The manual's drinks chart lets you adjust for time. How much is subtracted for each 40 minutes of drinking?

Accepted Answer

.01% — The chart says to subtract .01% for every 40 minutes spent drinking.

Answer

.10%

Answer

.02%

Answer

.04%

Question 7

On the manual's table of BAC effects, which effect on driving is listed at .10?

Accepted Answer

A reduction in reaction time — The .10 row pairs noisy, possibly embarrassing behavior and mood swings with a reduction in reaction time.

Answer

Unable to drive

Answer

Less inhibited

Answer

Breathing stops

Question 8

On the manual's approximate blood alcohol chart, which row carries the label "Only Safe Driving Limit"?

Accepted Answer

Zero drinks — Only the zero-drink row, where BAC is .00 at every body weight, is labeled as the safe driving limit.

Answer

One drink

Answer

Two drinks

Answer

Three drinks

Question 9

What does blood alcohol concentration (BAC) commonly measure?

Accepted Answer

The amount of alcohol in your body — BAC is the usual measure of how much alcohol is in your body.

Answer

How many drinks were poured

Answer

How long ago the last drink was taken

Answer

How strong each drink was

Question 10

What do the laws described in the manual say about many drugs while a driver is on duty?

Accepted Answer

Possession or use is prohibited — The laws bar possessing or using many drugs on duty. They also forbid driving while affected by a controlled substance or anything else that makes a driver unsafe.

Answer

Use is allowed during rest breaks

Answer

Possession is allowed if the drugs stay in the sleeper berth

Answer

The laws apply only to hazardous materials drivers

Question 11

Two drivers drink the same amount at the same pace. One weighs far less than the other. What does the manual say about their blood alcohol concentrations?

Accepted Answer

The lighter person reaches a higher BAC — BAC depends partly on the amount of blood in the body, which rises with weight. A small person needs less alcohol to reach the same BAC.

Answer

They will be identical

Answer

The heavier person reaches a higher BAC

Answer

Weight matters only after ten drinks

Question 12

Which travel-related item is on the manual's "Are You At Risk?" list for drowsy driving?

Accepted Answer

Flying or changing time zones — The list ends with flying and changing time zone, alongside items such as sleep loss, long drives without breaks and sedating medications.

Answer

Driving a familiar daytime route

Answer

Carrying a passenger

Answer

Taking a break every two hours

New Hampshire CDL — General Knowledge: Alcohol & Drugs practice test

Study questions with answers

1. On the manual's table of BAC effects, at which level is the driver described as less alert, with coordination impairment beginning?

2. At night you suspect you may be getting sleepy. What quick self-check does the manual suggest, if you can do it safely?

3. What does the manual call the safest rule about drugs and driving?

4. The manual compares the way fatigue impairs vision and judgment to what?

5. Once alcohol enters the bloodstream, where does the manual say it is carried?

6. The manual's drinks chart lets you adjust for time. How much is subtracted for each 40 minutes of drinking?

7. On the manual's table of BAC effects, which effect on driving is listed at .10?

8. On the manual's approximate blood alcohol chart, which row carries the label "Only Safe Driving Limit"?

9. What does blood alcohol concentration (BAC) commonly measure?

10. What do the laws described in the manual say about many drugs while a driver is on duty?

11. Two drivers drink the same amount at the same pace. One weighs far less than the other. What does the manual say about their blood alcohol concentrations?

12. Which travel-related item is on the manual's "Are You At Risk?" list for drowsy driving?

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