Traffic Signals & Road Markings
Flashing lights, lane markings, and arrow signals control traffic flow. Know what they mean to pass your test and stay safe.
Why Traffic Control Matters on the Test
Understanding traffic signals and road markings is fundamental to safe driving. Expect multiple questions on what different lights and lines mean.
- Flashing signals (red vs yellow)
- Lane line meanings
- Arrow signals
- Center turn lanes
Understanding Traffic Signal Colors
Traffic lights communicate instructions to drivers. Misunderstanding them causes accidents—and test failures.
Red Light
STOP. Do not enter the intersection.
Right turn on red is allowed in most states UNLESS posted.
Yellow Light
CAUTION. Light is about to turn red.
Prepare to stop if safe. Do NOT speed up to "beat the light."
Green Light
GO. But yield to vehicles/pedestrians already in the intersection.
Green doesn't mean go blindly—always check before proceeding.
Flashing Signals (Heavily Tested)
Flashing Red
Treat as a STOP sign. Come to a complete stop, then proceed when safe.
Flashing Yellow
Proceed with CAUTION. Slow down and be alert, but no stop required.
DMV Test Tip
The difference between flashing red (STOP) and flashing yellow (CAUTION) is one of the most commonly missed test questions. Memorize this!
Arrow Signals: What They Mean
Arrow signals control specific turning movements. They override the main signal for that direction.
Green Arrow
Protected turn. You have the right-of-way in that direction. Proceed safely, even if the main light is red.
Yellow Arrow
Protected turn is ending. Finish your turn if you're in the intersection; otherwise prepare to stop.
Red Arrow
STOP. You may NOT turn in that direction. Wait for a green arrow before proceeding.
Road Markings: Lines That Talk
Pavement markings communicate just as much as signals. Yellow = opposite directions, White = same direction.
Yellow Lines (Opposite Traffic)
Broken Yellow
Passing allowed when safe (from either direction).
Solid Yellow
No passing on your side. (If on other side, they can pass.)
Double Solid Yellow
No passing either direction. Crossing prohibited except for left turns into driveways.
White Lines (Same Direction)
Broken White
Lanes going same direction. Lane changes permitted.
Solid White
Lane changes discouraged but allowed. Marks areas where changing is risky.
Exam Alert: Two-Way Left-Turn Lane
Center lane marked with solid yellow outside, broken yellow inside. Used by traffic from both directions to prepare for left turns. Cannot be used for passing or through driving.
Test Your Knowledge
10 questions on signals, arrows, and road markings. Master the test essentials.
A flashing red traffic signal means:
Questions align with the Manual on Uniform Traffic Control Devices (MUTCD) and state DMV handbooks.
Frequently Asked Questions
What's the difference between a flashing red and flashing yellow light?
Can I change lanes across a solid white line?
What does a green arrow mean when the main light is red?
What's a two-way left-turn lane?
Learn other concepts
Signs & Signals
Master road signs, traffic lights, and pavement markings. The complete visual guide to understanding the road.
Right-of-Way Rules
Understand who goes first at intersections, roundabouts, and special situations. The most commonly missed topic on the test.
Safe Driving
Defensive driving, weather conditions, and emergency maneuvers. Learn how to survive on the road and handle hazards.
Pass Your Test with Confidence
Traffic signals are just one topic. Get comprehensive, state-specific preparation to guarantee your passing score.