Impaired Driving & Penalties — Montana
Montana CDL practice test: 435 free practice questions (Based on the official driver handbook). The official format is not yet verified; check the official site before your test. Impaired Driving & Penalties: 15 questions.
Blood alcohol limits, drugs and fatigue, licence suspensions, demerit points and fines.
This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines.
| Topic / Metric | Value |
|---|---|
| Topic | Impaired Driving & Penalties |
| License test | Montana CDL permit (CLP) knowledge tests |
| Topic questions | 15 (3% of 435 total) |
| Review status | This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines. |
Official handbook
Not yet verified
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Questions (15)
1. Which of the following is not an example of a distracted person that motorists should be worried about?
- A driver talking to a passenger in their vehicle
- A child on the side of the road
- A construction worker on the side of the road
- A person sitting on a bench waiting for a bus ✓
Answer: D. A person sitting on a bench waiting for a bus
2. The only way to sober up after consuming alcohol is to:
- Take a cold shower.
- Exercise.
- Wait. ✓
Answer: C. Wait.
The only way to sober up is to wait — time is what clears alcohol from your body. The handbook explains that alcohol travels through the bloodstream to the brain and then to the liver, and the liver burns it off at a fixed rate of one-third of an ounce per hour. Because that rate cannot be sped up, the passage says plainly that only time will sober you up, and it names black coffee and a cold shower as things that will not. So sitting still and letting your body do its work is the only real option.
3. Distracted driving:
- Always comes as a result of physical distraction, not mental distraction.
- Can be elevated by pre-programming radio stations.
- Can be avoided by eating while driving.
- Can be avoided by not engaging in complex conversations while driving. ✓
Answer: D. Can be avoided by not engaging in complex conversations while driving.
You can avoid distracted driving by not engaging in complex conversations while driving. The handbook's driving-safely section lists ways to reduce distraction before and during a trip. It says to pre-program radio stations, review maps, and plan your route before you begin driving. While driving, it says not to read or write, to avoid smoking, eating, and drinking, and not to engage in complex or emotionally intense conversations with other occupants. Choosing not to have complex conversations removes one of the distractions the handbook specifically names, so it is a valid way to help avoid distracted driving.
4. To prevent fatigue while driving, you should:
- Keep the cab warm.
- Keep the cab cool. ✓
- Keep the cab poorly ventilated.
- Close the vents.
Answer: B. Keep the cab cool.
Keep the cab cool — the handbook's alertness list says to keep cool by opening a window or running the air conditioner. The fatigue section of the handbook gives a short list of things you can do to stay alert behind the wheel, and one of those items is to keep cool by opening the window or using the air conditioner. That cooling advice sits right alongside other alertness habits such as wearing sunglasses against glare and eyestrain, taking periodic breaks, and stopping to rest or nap. Since the handbook names keeping cool as the way to help maintain alertness, keeping the cab cool is the choice that matches it.
5. A fatigued driver:
- Is extra alert.
- Should take over-the-counter remedies to wake them up.
- May make critical decisions too slowly. ✓
- Is usually more conscientious than a typical driver.
Answer: C. May make critical decisions too slowly.
A fatigued driver may make critical decisions too slowly. The handbook describes fatigue as physical or mental tiredness from strain, repetitive tasks, illness, or lack of sleep. It says fatigue impairs your vision and judgment much like alcohol and drugs, and that it affects your ability to make critical decisions. It also slows how quickly you see and react to hazards and makes you more likely to misjudge speed and distance. So a tired driver does not simply feel sleepy; the thinking behind driving choices gets worse.
6. If a driver begins to feel fatigued while driving, they should:
- Continue driving.
- Drink coffee.
- Stop and rest. ✓
- Drive faster to finish the trip more quickly.
Answer: C. Stop and rest.
If you begin to feel fatigued while driving, you should stop and rest. The handbook's fatigue section says that when you feel tired, you should stop driving and get some rest or take a nap. It also says caffeine can increase awareness for only a few hours, then wears off, so you should not rely on it to prevent fatigue. The signs of fatigue should tell you to stop and rest. That supports stopping to rest rather than continuing, using coffee, or trying to finish faster.
7. In cold weather, an alcohol evaporator should be checked and filled:
- Once a week.
- Every day. ✓
- Every hour.
- Once a month.
Answer: B. Every day.
Check and fill the alcohol evaporator every day during cold weather. The handbook says some air brake systems use an alcohol evaporator to put alcohol into the air system, which helps lower the chance of ice forming in valves and other parts in cold weather. Ice in the system can stop the brakes from working. For that reason, the cold-weather instruction is to check the alcohol container and fill it as needed each day. Daily air tank drainage is still required unless the system has automatic drain valves.
8. The more alcohol in the body:
- The quicker the liver will digest the alcohol.
- The less effect the alcohol will have on the individual.
- The longer it will take to remove the alcohol from the body. ✓
Answer: C. The longer it will take to remove the alcohol from the body.
The more alcohol in the body, the longer it will take to remove it, so choose the answer saying removal takes longer. The handbook explains that the liver handles alcohol at a fixed rate — only about one-third of an ounce per hour, which is less than what a standard drink contains. Because that rate does not speed up, drinking faster than the body can clear alcohol means more of it builds up in your blood. The handbook states plainly that only time, not black coffee or a cold shower, sobers you up. So a larger amount of alcohol in the body simply means a longer wait before it is gone.
9. A distracted driver:
- Usually reacts well to hazards.
- Usually has slowed perception. ✓
- Is usually aware of what is happening around them.
- Is a good person to follow.
Answer: B. Usually has slowed perception.
A distracted driver usually has slowed perception, so they may notice hazards late or miss them entirely. The handbook lists slowed perception as an effect of distracted driving. It says this can delay you in perceiving an important traffic event or make you fail to perceive it at all. The same section also mentions delayed decision making and improper action, which means distraction affects how you take in and respond to what is happening. Because the handbook ties distracted driving to slowed perception and increased risk, the answer that says perception is usually slowed fits directly.
10. Which of the following determines your blood alcohol concentration (BAC)?
- How much you drink ✓
- How frequently you drink
- The temperature of the drink
Answer: A. How much you drink
The amount you drink determines your blood alcohol concentration (BAC). Your blood alcohol concentration goes up with the amount of alcohol you drink. The handbook lists the amount consumed, how fast you drink, and your weight as the things that set BAC, with more alcohol producing a higher BAC. It also says the source of the alcohol does not matter, so whether it comes from beer, wine, or liquor, what counts is the alcohol itself. Nothing in the passages says the temperature of a drink changes BAC. That is why the amount you drink is the listed factor among these choices.
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Last checked: 2026-10-17 · Not yet verified
Updated: · Based on the official driver handbook