What Part 4 of the DMV Practice Test Covers

Part 4 focuses on the rules and signs you will encounter most often while driving: parking regulations, road signs and their meanings, right-of-way situations, and safe driving practices in different conditions. These questions test whether you understand not just what a sign means, but what you must do when you see it.

This section is typically shorter than Parts 1 through 3, but the questions are more scenario-based. Instead of asking "What does this sign mean?" the test often asks "You see this sign and this situation — what do you do?" That shift matters because it tests judgment, not just memory.

Most states weight Part 4 equally with the other sections, so scoring well here is as important as the rest of the test. Many test-takers find this section easier because the rules are concrete — a stop sign always means stop — but they lose points by rushing through or misreading what the question is actually asking.

Key Takeaways

  • Part 4 tests road signs, parking rules, and right-of-way situations through scenario questions that ask what you should do, not just what a sign means.
  • Regulatory signs (stop, yield, do not enter) are mandatory; warning signs (curves ahead, pedestrian crossing) tell you to slow down and be ready; informational signs (speed limit, route numbers) give you information you must follow.
  • Parking violations include stopping in no-parking zones, parking too close to fire hydrants or intersections, and parking in spaces reserved for people with disabilities without a valid permit.
  • Right-of-way rules change based on whether you are at a traffic light, a four-way stop, a two-way stop, or an uncontrolled intersection, so read each scenario carefully.
  • Practice tests for Part 4 are shorter but require you to read the full question and all answer choices before selecting, because similar-sounding rules often have one correct answer.

The Three Types of Road Signs and What They Require

Regulatory signs are usually rectangular and white with black or red text. They tell you what you must or must not do. A stop sign, yield sign, do-not-enter sign, and speed-limit sign are all regulatory. If you ignore a regulatory sign, you can be cited. The test assumes you will obey them without question.

Warning signs are usually diamond-shaped and yellow with black symbols or text. They alert you to a hazard ahead — curves, pedestrian crossings, school zones, slippery roads, or construction. A warning sign does not forbid you from entering; it tells you to slow down, look carefully, and be ready to stop. Many test questions ask what you should do when you see a warning sign, and the answer is almost always "reduce speed" or "be prepared to stop."

Informational signs are usually rectangular and blue, green, or brown. They tell you where things are — rest areas, hospitals, route numbers, or distances. You do not have to obey an informational sign the way you obey a stop sign, but you should read it and use the information. Test questions about informational signs usually ask what the sign tells you, not what you must do.

The test often mixes these three types in a single question. For example: "You see a yellow diamond sign showing a curve ahead, and then a white rectangular sign showing a speed limit of 25 mph. What should you do?" The answer requires you to recognize that the diamond is a warning (slow down) and the rectangle is regulatory (obey the speed limit), so you must reduce your speed to 25 mph or less before the curve.

Parking Rules and Common Violations

Part 4 includes several questions about where you can and cannot park. The rules are the same in most states, though some details vary by jurisdiction. Learn the general rules, then check your state's DMV handbook for local exceptions.

You cannot park within a certain distance of a fire hydrant — usually 15 feet on either side. You cannot park in a no-parking zone, which is marked by a sign or a red curb. You cannot park in a handicapped-accessible space unless you display a valid permit or license plate issued to a person with a disability. You cannot park at an intersection, on a crosswalk, or on the sidewalk. You cannot park on the wrong side of the street in a one-way area, and you cannot park facing the wrong direction on a two-way street.

Test questions about parking often describe a specific location and ask whether parking is allowed. For example: "You want to park on a street with a yellow curb. What does the yellow curb mean?" The answer is that a yellow curb means parking is limited — usually to loading or unloading passengers or cargo for a short time. A red curb means no parking at any time. A white curb means short-term parking only, usually for loading or picking up passengers.

A common trick question asks about parking near a corner or intersection. The rule is that you must stay a certain distance away — often 20 to 30 feet — so that drivers turning or pedestrians crossing can see each other. If a question asks "Can you park here?" and the location is near a corner, the answer is almost always no.

Right-of-Way Rules in Different Situations

Right-of-way questions make up a large part of Part 4 because they directly affect safety. The rules change depending on the type of intersection and the traffic control devices present.

At a traffic light: Green means go, but you must yield to pedestrians in the crosswalk and to vehicles already in the intersection. Yellow means prepare to stop. Red means stop and do not proceed until the light turns green. A right turn on red is allowed in most states unless a sign says otherwise, but you must yield to pedestrians and oncoming traffic.

At a four-way stop: All vehicles stop. The first vehicle to stop has the right to go first. If two vehicles stop at the same time, the vehicle on the right has the right of way. If two vehicles are across from each other and both want to go straight, they can both go. If one wants to turn left and one wants to go straight, the straight-going vehicle goes first.

At a two-way stop: Only the cross-traffic stops. You do not stop, so you have the right of way. Vehicles on the cross-street must yield to you.

At an uncontrolled intersection: No traffic lights or stop signs. Yield to the vehicle on your right. If a vehicle is on your left, you have the right of way.

Test questions often combine right-of-way with other elements. For example: "You are at a four-way stop. A pedestrian is in the crosswalk. You have the right of way. What should you do?" The answer is that you must yield to the pedestrian even though you have the right of way, because pedestrians always have the right of way in a crosswalk.

Safe Driving Practices and Hazard Recognition

Part 4 includes questions about how to drive safely in specific conditions: rain, fog, night, construction zones, and school zones. These questions test whether you understand how conditions change what you should do.

In rain, you should increase your following distance because wet roads reduce tire grip. In fog, you should use low-beam headlights (not high beams, which reflect off the fog) and reduce speed. At night, you should use headlights and be aware that your vision is limited. In a school zone, you must obey the posted speed limit, which is often lower than the regular speed limit, and watch for children.

Construction zones have their own rules. You must obey all signs and signals in a construction zone. You should reduce speed, stay in your lane, and be prepared for sudden stops. Many states have increased penalties for speeding or unsafe driving in a construction zone.

A common scenario question asks: "You are driving in heavy rain and you see a car ahead of you brake suddenly. What should you do?" The answer is to reduce speed and increase your following distance so you have time to stop if needed. The question tests whether you understand that rain affects your ability to stop, not just your ability to see.

How to Approach Part 4 Questions on a Practice Test

Part 4 questions often include a scenario with multiple details. Read the entire question and all answer choices before selecting. A common mistake is to read the first half of the question, assume you know the answer, and select without reading the rest.

For example: "You are at a red light. A police officer is directing traffic. The officer signals you to go. What should you do?" If you read only "You are at a red light," you might answer "Stop." But the full question tells you that a police officer is directing traffic, which means you must obey the officer's signal, not the light. The correct answer is to go.

Another strategy is to eliminate answers that are clearly wrong. If a question asks what you should do at a stop sign, any answer that says "slow down" or "proceed if the way is clear" is wrong — you must stop completely. If an answer says "stop," it is likely correct, but read the other choices to be sure.

Pay attention to words like "must," "should," "may," and "can." "You must stop at a red light" is always true. "You may turn right on red" is true in most places but not all, so the question might ask about a specific state or a sign that says otherwise. "You should reduce speed in rain" is good practice but not a legal requirement in the same way that stopping at a red light is.

Common Mistakes on Part 4 and How to Avoid Them

The most common mistake is confusing warning signs with regulatory signs. A yellow diamond sign warns you of a hazard, but it does not forbid you from entering. You should slow down and be ready to stop, but you do not have to stop unless another sign or signal tells you to. If a question asks "What must you do when you see this yellow diamond sign?" the answer is usually "reduce speed" or "be prepared to stop," not "stop."

Another mistake is misreading right-of-way rules at four-way stops. Many test-takers remember "the vehicle on the right has the right of way" but forget that this rule applies only when two vehicles arrive at the same time. If you arrive first, you go first, regardless of which side the other vehicle is on.

A third mistake is assuming that parking rules are the same everywhere. Some states allow parking in certain zones that other states forbid. Read your state's DMV handbook and focus on the rules for your state, not general rules. If a practice test is from another state, note the differences.

Finally, many test-takers rush through Part 4 because it is shorter than other sections. Do not. Read each question carefully, consider all answer choices, and take your time. A single mistake on Part 4 can lower your overall score.

How to Study Part 4 Effectively

Start by reading your state's DMV handbook, paying special attention to the sections on road signs, parking, and right-of-way. Highlight or take notes on rules that seem confusing or that you think you might forget.

Next, take a full practice test that includes Part 4. Do not skip it or rush through it. Time yourself so you know how long it takes and whether you have time to review your answers.

After you finish, review every question you got wrong and every question you were unsure about. For each one, write down the rule or concept it tested. For example: "Four-way stop: vehicle on the right has right of way only if both vehicles arrive at the same time." Keep a list of these rules and review it before your next practice test.

Use flashcards or a study app to memorize road signs. Many apps let you practice identifying signs and answering questions about them. Spend 10 to 15 minutes a day on flashcards for a week or two before your test.

Finally, take at least two full practice tests that include Part 4, with a few days between them. Your goal is to score at least 80 percent on Part 4 before you take the real test. If you score lower, review the rules you missed and take another practice test.

Frequently Asked Questions

What is the difference between a yellow curb and a red curb?

A red curb means no parking at any time. A yellow curb means parking is limited to loading or unloading passengers or cargo for a short time, usually 5 to 10 minutes. Check your state's DMV handbook for exact time limits, as they vary by state.

If I have the right of way at an intersection, do I always have to go?

No. You have the right of way, but you must always yield to pedestrians in a crosswalk, to emergency vehicles, and to any vehicle that is already in the intersection. If another vehicle is not obeying the rules, it is safer to let them go first than to insist on your right of way.

What should I do if I see a yellow diamond sign with a curve symbol?

Reduce your speed and be prepared to stop. A yellow diamond sign warns you of a hazard ahead. In this case, the hazard is a curve, so you should slow down before you reach the curve so you can stay in control of your vehicle.

Can I turn right on a red light?

In most states, yes, but you must yield to pedestrians and oncoming traffic. Some intersections have a sign that says "No Right Turn on Red," which means you cannot turn right until the light is green. Always look for this sign before turning.

How far must I stay from a fire hydrant when parking?

Most states require you to stay at least 15 feet away from a fire hydrant on either side. Check your state's DMV handbook for the exact distance, as it can vary. When in doubt, do not park near a hydrant.