What the road signs on your DMV test mean

The DMV written test includes questions about road signs because you need to recognize them when ready while driving. Each sign has a specific shape, color, and message. Red means stop or prohibition. Yellow means warning. Green means direction or permission. White means regulation. Blue means services or information. Learning what each sign looks like and what it tells you to do is the fastest way to pass the sign section of your test and stay safe on the road.

Your state's DMV handbook lists every sign you might see on the test, with pictures. Most states test on the same core signs — stop, yield, speed limit, one-way, do not enter, pedestrian crossing, and a handful of warnings. Some states add regional signs. The best study method is to go through your handbook's sign section once, then use flashcards or online practice tests to drill the ones you miss.

Key Takeaways

  • Red signs mean stop or do not do something; yellow signs warn you of hazards ahead; green signs show directions; white signs show rules you must follow.
  • Stop signs are octagonal and red; yield signs are triangle-shaped and red and white; speed limit signs are rectangular and white.
  • Your state DMV handbook has pictures of every sign on your test, organized by category and color.
  • The DMV test usually asks you to identify a sign by its shape and color, or to say what action a sign requires.

Red signs: stop, yield, and do not enter

Red signs always tell you to stop, slow down, or not do something. The stop sign is octagonal (eight-sided), red with white letters spelling STOP. You must come to a complete stop, check for traffic and pedestrians, and proceed only when it is safe. At a four-way stop where multiple drivers arrive at the same time, the driver on your right has the right of way.

The yield sign is a triangle pointing downward, red and white. It means slow down and be ready to stop, but you do not have to stop unless traffic is coming. Yield to pedestrians and other vehicles before you proceed. A yield sign often appears where a ramp or side road meets a main road.

The do not enter sign is rectangular, red with white letters. It appears at the entrance to roads or highways where you are not allowed to go — usually one-way roads where you would be driving the wrong direction. Never cross this sign. The wrong way sign is also red and white and appears on one-way roads; if you see it, you are going the wrong direction and must turn around safely.

Yellow signs: warnings and hazards

Yellow signs warn you that something ahead requires caution. Most yellow signs are diamond-shaped. The pedestrian crossing sign shows a walking figure and warns that pedestrians may cross the road ahead; slow down and be ready to stop. The school crossing sign is also yellow and diamond-shaped; it means a school is nearby and children may be in the area, so reduce speed.

Other common yellow warning signs include curve ahead (warns of a sharp turn), hill ahead (warns of a steep grade), slippery when wet (warns of poor traction in rain), and divided highway ends (warns that you are about to enter a two-way road). Yellow signs do not require you to stop, but they tell you to slow down and pay attention. A school bus stop sign is yellow and diamond-shaped with a school bus symbol. When you see this sign, expect a school bus to stop ahead. You must stop at least 10 to 15 feet away from a stopped school bus with its red lights flashing, even on the opposite side of the road in most states. Check your state handbook for the exact distance.

Green signs: directions and permitted actions

Green signs show directions, distances, and services. A go sign is green with a white arrow pointing right and means you may turn right on red after a complete stop, unless a sign says otherwise. Directional signs are green and rectangular and show the names of cities, highways, or landmarks ahead, along with distance in miles. Service signs are green and rectangular and show where hospitals, rest areas, gas stations, or food are located.

A one-way sign is green or black and white and shows an arrow pointing in the direction traffic must flow. If you see a one-way sign, you must travel in the direction the arrow points. Turning against a one-way sign is illegal and dangerous. One-way signs often appear on city streets and parking lots, so pay attention to their direction before you enter.

White signs: speed limits and regulations

White signs show rules you must obey. The speed limit sign is rectangular and white with black numbers. The number is the maximum speed you may drive under ideal conditions; you must drive slower if weather, traffic, or road conditions are poor. A no parking sign is white and rectangular and shows where you cannot leave your vehicle. A do not pass sign is white and rectangular with a red X or the words DO NOT PASS, and means you cannot cross the center line to pass another vehicle.

Other white regulatory signs include no turn on red (means you must wait for a green arrow to turn), handicapped parking (marks spaces reserved for vehicles with disability permits), and keep right (tells you which side of the road to use). White signs are laws, not suggestions; violating them can result in a ticket. Always follow white signs exactly as written.

Blue signs: services and information

Blue signs show where services are located. A hospital sign is blue and white with an H symbol and points toward the nearest hospital. Rest area signs are blue and show where you can stop to rest, use a restroom, or get information. Traveler information signs are blue and show weather, traffic conditions, or emergency alerts.

Blue signs are informational; they do not require you to do anything, but they help you find what you need. You will not see many blue sign questions on the DMV test, but knowing what they mean helps you navigate unfamiliar roads and find services in an emergency.

How the DMV tests you on road signs

The written test usually shows you a picture of a sign and asks what it means, or describes a situation and asks which sign applies. For example: "You see a yellow diamond sign with a picture of a school bus. What should you do?" The answer is slow down and be prepared to stop because a school bus may stop ahead. Other questions ask you to identify a sign by its shape and color alone. For example: "What does an octagonal red sign mean?" The answer is stop.

Some questions ask about the rules a sign enforces. For example: "You see a white rectangular sign that says DO NOT PASS. Can you cross the center line to pass a slow vehicle?" The answer is no. The best way to study is to read your state's DMV handbook section on signs, then take online practice tests until you score 100 percent on the sign questions. Most states allow you to retake the written test if you fail, but passing on the first try saves time and money.

Frequently Asked Questions

What is the difference between a stop sign and a yield sign?

A stop sign is octagonal and red; you must come to a complete stop before proceeding. A yield sign is triangular and red and white; you slow down and proceed only if it is safe, but you do not have to stop. Both require you to give the right of way to other traffic.

Can I turn right on red?

You may turn right on red after a complete stop, unless a sign says otherwise. Look for a "no turn on red" sign or a green arrow sign. If you see either, follow what the sign says. Always check for pedestrians and oncoming traffic before you turn.

What should I do if I see a school bus with red lights flashing?

Stop at least 10 to 15 feet away from the bus, even if you are on the opposite side of the road. Do not move until the red lights stop flashing and the bus moves. Check your state handbook for the exact stopping distance, as it varies by state.

How many road signs will be on my DMV test?

Most states include 5 to 10 sign questions on the written test out of 30 to 50 total questions. The exact number varies by state. Your DMV handbook tells you which signs are tested in your state.

What if I fail the sign questions on my DMV test?

You can retake the written test. Review the signs you missed in your handbook, use flashcards or online practice tests to drill them, and try again. Most people pass on the second attempt after focused study on their weak areas.