Texas DMV Permit Test · Class C Knowledge Test
Texas DMV Permit Test: Signs, Signals, and Pavement Markings Concepts
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Overview
This chapter is about reading the road before you reach it. Signs, traffic lights, and painted lines all talk to you, and each one uses shape and color so you can understand it from far away, even before you can read the words.
Shape tells you a lot. An eight-sided red sign always means stop, and a triangle pointing down means yield. A yellow diamond warns of a hazard ahead, a five-sided sign marks a school zone or crossing, and a round yellow sign with an X and RR means a railroad crossing is coming. Orange signs mean a work zone, and brown signs point to parks and recreation.
Traffic lights can be steady or flashing. A steady yellow means the light is about to turn red, so stop if you safely can. A flashing red works like a stop sign, and a flashing yellow means slow down and go with care. If a signal is completely dark, treat the intersection as an all-way stop. A flashing yellow arrow lets you turn left only after you yield to oncoming cars and people walking.
Painted lines matter too. Yellow center lines separate traffic going in opposite directions. If the solid yellow line is on your side, you may not cross it to pass. A center lane with solid and broken yellow lines on both edges is a shared left-turn lane, used only to start or finish a left turn.
Key concepts
Sign shapes
Eight sides means stop. A downward triangle means yield. A diamond warns of a hazard. Five sides (like a house) means a school zone or school crossing. A round sign warns of a railroad crossing. A sideways pennant on the left side marks a no-passing zone.
Memory tipCount the sides: 8 = stop, 5 = school, 3 pointing down = yield. Round = railroad.
Sign colors
Red means stop, yield, or do not. Yellow is a general warning. Orange marks a construction or work zone. White signs with black letters state rules, such as speed limits. Brown points to parks and recreation areas.
Memory tipOrange = cones and workers. Brown = trees and parks.
Flashing red vs. flashing yellow
A flashing red light means stop completely, then go when it is safe, just like a stop sign. A flashing yellow light means slow down and go ahead with caution. You do not have to stop for a flashing yellow.
Memory tipRed always asks for a full stop, even when it blinks.
Dark traffic signal
If a traffic light shows no lights at all, for example after a storm or power loss, treat the intersection as an all-way stop. Every driver stops, then goes in turn.
Memory tipNo lights = everyone has a stop sign.
Source: Texas Transportation Code · as of 2026
Flashing yellow arrow
A flashing yellow left-turn arrow means you may turn left, but you must first yield to oncoming cars and to people in the crosswalk. It is not a protected turn.
Memory tipBlinking yellow arrow = turn only when the way is clear.
Yellow center lines
Yellow center lines separate traffic moving in opposite directions. A solid yellow line on your side means you may not cross it to pass. A broken yellow line on your side means you may pass when it is safe.
Memory tipThe line closest to you is the one that applies to you.
Hand signals
If your turn signals do not work, use your left arm. Arm straight out means a left turn. Arm bent upward at the elbow means a right turn. Arm bent downward means slow down or stop.
Memory tipUp = right, down = stop, straight = left.
Source: Texas Transportation Code · as of 2026
Often tested
- Tests often show a sign shape with no words and ask what it means. Know the stop, yield, school, and railroad shapes by heart.
- Do not mix up the two flashing lights: red means stop first, yellow only means slow down.
- A dark signal is treated as an all-way stop, not as a green light for the bigger road.
- The shared center left-turn lane is not a passing lane or a travel lane.
Easy to confuse: Steady and flashing lights
| Light | What it means | Must you stop? |
|---|---|---|
| Steady yellow | Red is coming next | Yes, if you can stop safely |
| Flashing red | Same as a stop sign | Yes, always a full stop |
| Flashing yellow | Slow down, use caution | No |
| Flashing yellow arrow | Left turn allowed after yielding | Only if others have the right of way |
3 sample questions
Verified practice questions from this unit.
Question 1. You see a red, eight-sided sign at the corner with white letters. What must you do?
- ① Watch for a hazard ahead and keep your speed
- ② Slow down and keep going if no one is coming
- ③ Come to a complete stop, then go when it is safe
- ④ Stop only if other cars are at the corner
▼ Show answer and explanation▲ Hide answer and explanation
Answer: ③ Come to a complete stop, then go when it is safe
Key point: Red eight-sided sign = STOP: full stop every time
An eight-sided (octagon) red sign is a STOP sign. You must come to a complete stop at the stop line, crosswalk, or edge of the intersection, then go only when the way is clear.
Wrong choices
- Slow down and keep going if no one is coming: Slowing down without stopping is a "rolling stop" and is against the law.
- Stop only if other cars are at the corner: You must stop every time, even when no other cars are there.
- Watch for a hazard ahead and keep your speed: Warning signs are yellow diamonds. A red octagon always means stop.
Question 2. A red and white sign shaped like a triangle pointing down is at the end of your on-ramp. What does it tell you?
- ① The road ahead narrows to one lane
- ② Come to a full stop every time, even if no one is coming
- ③ Slow down and let traffic on the main road go first
- ④ Speed up so that other drivers have to make room
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Answer: ③ Slow down and let traffic on the main road go first
Key point: Downward triangle = YIELD: slow, let other traffic go
A downward-pointing red and white triangle is a YIELD sign. Slow down, be ready to stop, and let traffic and pedestrians that are already there go first. You stop only if you need to.
Wrong choices
- Come to a full stop every time, even if no one is coming: A yield sign does not demand a stop every time. You stop only when traffic makes it necessary.
- Speed up so that other drivers have to make room: Forcing other drivers to make room is the opposite of yielding and can cause a crash.
- The road ahead narrows to one lane: A lane-narrowing warning is a yellow diamond sign, not a red and white triangle.
Question 3. What does a five-sided sign (shaped like a house with a pointed roof) warn you about?
- ① A hospital entrance is coming up
- ② A railroad crossing is just ahead
- ③ A school zone or school crossing is near
- ④ A no-passing zone is starting
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Answer: ③ A school zone or school crossing is near
Key point: Five-sided (pentagon) sign = school zone or school crossing
A five-sided (pentagon) sign is used only for school zones and school crossings. Slow down and watch for children who may run into the street.
Wrong choices
- A railroad crossing is just ahead: A railroad crossing warning is a round yellow sign with an X and the letters RR.
- A no-passing zone is starting: A no-passing zone is marked by a yellow pennant (sideways triangle) on the left side of the road.
- A hospital entrance is coming up: Hospital signs are blue square or rectangle service signs.