Signal Lab
Look at the light, the lines or the vehicle, then pick what you do. 45 situations from the traffic rules on the permit test, not just the signs.
The rules between the signs
Road signs are only part of the permit test. The rest is what you do when there is no sign to read: a light that flashes instead of staying on, a yellow line that is solid on your side, an ambulance behind you, a school bus stopping on the other side of the road. Signal Lab turns each of these into a single picture and three choices, and after every answer shows the rule it came from.
The situations come in ten topics: right-of-way, traffic lights, lines on the road, speed, following distance, lanes and turns, special vehicles, parking, night and bad weather, and safety. Play a topic until you get three stars, or take the Quick 10: it mixes all of them and brings back the rules you got wrong. The Lab of the Day gives everyone the same five situations and counts toward the same streak as the Daily 5.
Why pictures instead of sentences
On the road you never read the rule — you see a flashing arrow, a bus with its stop arm out or a truck swinging wide and you have a second to act. Answering from a picture trains that. When a rule is the same in nearly every state, the game treats it as a rule. When a number or an exception differs by state — how close to the curb you park, whether you stop for a bus across a divided highway — the card says so and sends you to your own handbook.
Next, try Right of Way for intersections, or drive the same rules in 3D on the Road Rules roads of Road Sign Adventure. All the rules with their sources are on the rules of the road page.
Questions people ask
What does a flashing yellow arrow mean?
You may turn left, but your turn is not protected: first yield to oncoming traffic and to people in the crosswalk, then turn when there is a safe gap.
What do I do when the traffic lights are out?
Treat the intersection as an all-way stop. Stop, then go in the order vehicles stopped; if two stop together, the car on the right goes first.
Do I stop for a school bus on the other side of the road?
On an ordinary two-lane road, yes: traffic in both directions stops while the red lights flash. On a divided highway, traffic on the other side usually doesn't have to stop, but the exact rule differs by state.
Which way do I turn my wheels when parking on a hill?
Uphill with a curb, away from the curb. Downhill, toward the curb. With no curb, toward the edge of the road. Then set the parking brake.
Where do the answers come from?
Every question is tied to one rule on our rules of the road page, with the handbook or law it comes from. When a detail changes from state to state, the card says so.