Impaired Driving & Penalties — Mississippi
Mississippi CDL practice test: 463 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 | Mississippi CDL permit (CLP) knowledge tests |
| Topic questions | 15 (3% of 463 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 a sign of fatigue?
- Ability to focus ✓
- Daydreaming
- Yawning repeatedly
- Drifting from your lane
Answer: A. Ability to focus
The one that is not a sign of fatigue is the ability to focus. The handbook's fatigue section lists drifting from your lane and trouble recalling recent miles as warning signs, and it says pushing on while tired is a major cause of fatal crashes. Being able to focus is the opposite of the reduced attention those signs point to. The handbook does not list focus as a fatigue warning; it tells you to stop when warning signs appear.
2. Alcohol usually:
- Improves reaction time.
- Impairs depth perception. ✓
- Improves night vision.
Answer: B. Impairs depth perception.
Alcohol impairs depth perception, so judging distance on the road becomes harder. The handbook lists what alcohol does to a driver, and depth perception is one of those things. In the same sentence it says alcohol impairs muscle coordination, reaction time, depth perception, and night vision. That means your ability to judge how far away things are gets worse, not better, after drinking. The passage also says alcohol affects the brain areas that handle judgment and inhibition, and that even one drink can show signs of impairment in some people. So the only choice that matches the handbook is the one about depth perception.
3. You may be able to identify a distracted driver by if they are:
- Staying within their lane.
- Traveling at consistent speeds.
- Preoccupied with using their cell phone. ✓
Answer: C. Preoccupied with using their cell phone.
You can spot a distracted driver when they are preoccupied with using a cell phone. The handbook's list of signs to watch for includes drivers who are busy with maps, food, cigarettes, cell phones, or other objects. It also tells you to look for vehicles drifting over lane lines or within their lane and vehicles moving at inconsistent speeds. A driver focused on a phone fits the handbook's description of someone engaged in a driving distraction. Recognizing that behavior helps you give the distracted driver room and be careful when passing, because they may not notice you and may drift in front of you.
4. If feeling tired while driving, it is best to:
- Take a pep pill.
- Get some rest. ✓
- Continue driving.
Answer: B. Get some rest.
When you feel tired while driving, the best thing to do is get some rest. The handbook lists stopping driving to rest or nap as one of the ways to stay alert behind the wheel, and it warns that caffeine only helps for a few hours before wearing off, so you should not depend on it to prevent fatigue. Drugs may keep you awake but will not make you alert. The passage also points out that many drivers cannot tell when they are about to fall asleep, which is why the signs of fatigue should tell you to stop and rest.
5. Alcohol begins to affect the body:
- After only one drink. ✓
- After several drinks have been consumed.
- At the legal limit.
Answer: A. After only one drink.
Alcohol begins to affect the body after only one drink. The handbook explains that alcohol enters the bloodstream and reaches the brain, and it lists mild effects such as a mellow feeling and slight body warmth among the early BAC effects. It also says the liver handles only about one drink per hour, so alcohol from a single drink is present and can affect you before it clears. The effects are tied to rising BAC, not to reaching the legal limit or to having several drinks first.
6. Which of the following is not a sign of fatigue?
- Difficulty focusing, with frequent blinking
- Yawning repeatedly or rubbing eyes
- Staying in your lane ✓
Answer: C. Staying in your lane
Staying in your lane is not a sign of fatigue — drifting out of your lane is. The handbook lists the warning signs of tired driving, and among them is drifting from your lane, along with trouble remembering the last few miles, missing exits or signs, following too closely, or hitting a shoulder rumble strip. It also mentions feeling restless and irritable. Holding a steady position in your lane is normal driving, not a fatigue signal. The handbook adds that pushing on while tired is more dangerous than most drivers think and is a major cause of fatal crashes, so any sign of fatigue means you should stop and sleep or take a short nap.
7. When driving, you should stop and take a break ____ to avoid becoming too tired.
- Every half hour
- Every hour
- Every two hours ✓
- Every six hours
Answer: C. Every two hours
You should stop and take a break about every two hours during a long trip to keep from getting too tired. The handbook's list of ways to stay alert on the road includes taking periodic breaks, and it puts the timing at roughly every 100 miles or 2 hours on long trips. The same section warns that trying to push on while tired is a major cause of fatal accidents, and it tells you to stop driving and rest or nap once you notice signs of fatigue. So the two-hour mark is the book's own break interval, not a guess.
8. If you identify a distracted driver on the road, you should:
- Follow their vehicle closely.
- Try to get their attention.
- Give them plenty of room. ✓
- Flash your lights at them.
Answer: C. Give them plenty of room.
Give them plenty of room and keep your safe following distance. The handbook's section on watching out for distracted drivers says to give a distracted driver plenty of room and maintain your safe following distance. It also warns you to be very careful when passing, because the distracted driver may not know you are there and may drift in front of you. Keeping space around them means you have time to react if they drift over the lane divider, vary their speed, or move suddenly.
9. 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.
10. If you identify a distracted driver on the road, you should:
- Tailgate them.
- Flash your lights at them.
- Give them plenty of space. ✓
Answer: C. Give them plenty of space.
When you spot a distracted driver, give them plenty of space and keep your safe following distance. The handbook says you first need to recognize drivers who are distracted, then give them plenty of room while holding your normal safe following distance. It adds that you should be very careful when passing such a driver, because they may not notice you and may drift in front of you. That guidance points to putting distance between your vehicle and theirs, not staying close or trying to signal them.
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Last checked: 2026-10-17 · Not yet verified
Updated: · Based on the official driver handbook