Support us

QuizTraffic rulesUnited States

Test your knowledge with our multiple-choice quiz. Learn from each answer and improve your understanding of the traffic rules and road signs of United States.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.

Traffic signs
Traffic rules
United States
True/false 17 United States 14 Car controls 109 Dashboard lights 40 Right-of-way rules 9 Pedestrians 19 Bicyclists 20 Show all 581
Why is high-visibility clothing useful during a roadside breakdown?

101. Why is high-visibility clothing useful during a roadside breakdown?

It makes hazard warning lights unnecessary.
It protects you from injury if a vehicle hits you.
✓ It helps approaching drivers and roadside assistance workers see you.
It allows you to remain close to moving traffic.

High-visibility clothing improves your visibility, especially at night or in poor weather, but you must still remain away from traffic.

High-visibility clothing worn during a roadside breakdown
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if medication makes you feel drowsy?

102. What should you do if medication makes you feel drowsy?

✓ Do not drive until the effect has passed.
Drink coffee before driving.
Drive only for short distances.
Drive slowly and avoid freeways.

If a medication causes drowsiness, your concentration and judgment may be impaired and your reactions slowed. Do not drive until you are fit to do so and the effect has passed.

Drowsiness after taking medicine
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which selector position is used to drive the vehicle backward?

103. Which selector position is used to drive the vehicle backward?

D (Drive).
N (Neutral).
✓ R (Reverse).
P (Park).

Select R (Reverse) when you need to drive the vehicle backward. The vehicle should be stationary before selecting Reverse.

Automatic gear selector with P, R, N and D positions
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you wear suitable footwear when driving?

104. Why should you wear suitable footwear when driving?

So the clutch cannot wear out.
So the vehicle uses less fuel.
So the brakes respond more quickly.
✓ So you can operate the pedals accurately and safely.

Suitable footwear helps you operate the accelerator, brake, and clutch accurately. Loose, bulky, or slippery footwear can interfere with pedal control or become caught around the pedals.

Driver's footwear and contact with the pedals
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your vehicle begins rolling backward on a steep incline?

105. What should you do if your vehicle begins rolling backward on a steep incline?

Switch off the engine and restart immediately.
Open the door and step out.
Let it roll backward and try again.
✓ Apply the brake, secure the vehicle, and restart carefully.

Stop the vehicle under control, apply the parking brake if necessary, and prepare to move away again safely.

Vehicle rolling backward on a steep incline
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which control activates all turn signals at the same time?

106. Which control activates all turn signals at the same time?

The parking-brake control.
The rear-window defroster.
✓ The hazard warning light switch.
The headlight switch.

The hazard warning light switch activates all turn signals at the same time to warn other road users of a hazard or emergency.

Hazard warning light switch and triangle symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the purpose of cruise control?

107. What is the purpose of cruise control?

To keep a fixed distance from the vehicle ahead.
✓ To maintain a selected speed without continuous accelerator use.
To prevent the vehicle from exceeding any speed limit.
To steer the vehicle automatically.

Cruise control can maintain a selected speed without the driver continuously pressing the accelerator. The driver must remain attentive and ready to brake or take control when necessary.

Vehicle cruise-control buttons and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you be extra careful at night?

108. Why should you be extra careful at night?

Vehicles need more distance to accelerate.
Road markings become less important.
Street lighting makes drivers less alert.
✓ Visibility is reduced.

At night, it is harder to see pedestrians, bicyclists, road markings, and hazards. Reduce speed and use the correct lights.

Road traffic in reduced night-time visibility
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
You should check your mirrors before changing lanes.

109. You should check your mirrors before changing lanes.

False.
✓ True.

Checking your mirrors helps you see surrounding traffic before moving into another lane.

Driver checking a mirror before changing lanes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

110. What does this dashboard symbol indicate?

Electronic stability control.
✓ Power-steering warning.
Brake-system warning.
Charging-system warning.

This symbol indicates a possible fault with the power-steering system. Steering assistance may be reduced or unavailable, making the steering wheel harder to turn.

Power-steering warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if passengers are distracting you while driving?

111. What should you do if passengers are distracting you while driving?

✓ Ask them to stop and keep your attention on the road.
Turn around briefly so you can speak to them.
Ignore the traffic until the distraction has passed.
Drive faster so you can finish the trip sooner.

Passengers can reduce a driver's attention and concentration. If their behavior becomes distracting, ask them to stop and keep your focus on driving. If necessary, stop somewhere safe before dealing with the situation.

Passengers distracting a driver
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the purpose of a crosswalk?

112. What is the purpose of a crosswalk?

✓ To help pedestrians cross the road safely.
To provide a place where vehicles may stop temporarily.
To separate pedestrians from bicyclists along the road.
To give pedestrians the right-of-way throughout the whole street.

Crosswalks provide a designated place where people can safely cross the road.

Crosswalk across a road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

113. What does this vehicle-control symbol indicate?

Brake-system warning.
✓ Electronic parking brake.
Parking assistance.
Automatic brake hold.

This control operates the electronic parking brake. Pulling or pressing the switch applies or releases the parking brake, depending on the vehicle.

Electronic parking-brake switch and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Can you assume that you are safe to drive the morning after drinking?

114. Can you assume that you are safe to drive the morning after drinking?

✓ No, alcohol may still remain in your body.
Yes, if you eat breakfast before driving.
Yes, sleep removes all alcohol from your body.
Yes, if you feel completely sober.

The body needs time to process alcohol. Sleeping, eating, showering, or drinking coffee does not instantly remove it.

Fitness to drive the morning after drinking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you keep the driver's footwell free of loose objects?

115. Why should you keep the driver's footwell free of loose objects?

They could damage the carpet around the pedals.
They could block the footwell ventilation.
✓ They could roll into the pedals and interfere with control.
They could make it harder to adjust the driver's seat.

Loose objects in the driver's footwell, such as bottles, cans, or trash, can roll into the pedal area and interfere with the accelerator, brake, or clutch. Keep the footwell clear so you can operate the pedals safely and without obstruction.

Loose objects in the driver's footwell
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

116. What does this dashboard symbol indicate?

Electronic stability control.
Low tire pressure.
An engine-management fault.
✓ A general warning requiring attention.

This is a general or master warning symbol. It indicates that the vehicle has detected a condition requiring attention and is often accompanied by a message or another warning on the instrument display.

General warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should motorcyclists take extra care on wet metal covers?

117. Why should motorcyclists take extra care on wet metal covers?

They can increase the motorcycle's braking power.
✓ They can provide much less grip than the surrounding road.
They can make the tires overheat.
They can cause the tire pressure to rise suddenly.

Wet metal surfaces, such as drain or inspection covers, can provide much less grip than the surrounding road. Cross them smoothly, keep the motorcycle as upright as practical and avoid sudden braking, acceleration or steering.

Wet metal cover in a motorcycle's path
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you keep a dog on a leash near traffic?

118. Why should you keep a dog on a leash near traffic?

✓ To prevent it from suddenly running into the road.
To make it easier for drivers to hear the dog.
To allow the dog to walk closer to moving traffic.
To make approaching vehicles drive more slowly.

Dogs can react unpredictably to vehicles, people, noises, or other animals. Keeping a dog under close control on a leash near traffic reduces the risk of it suddenly entering the road and endangering itself or other road users.

Pedestrian keeping a dog on a leash near traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does it mean to cover the brake pedal?

119. What does it mean to cover the brake pedal?

Press the brake and accelerator together.
Apply the parking brake slightly.
✓ Position your right foot over the brake, ready to press it.
Rest your foot lightly on the brake while driving.

To cover the brake, move your right foot over the brake pedal without pressing it, so you are ready to brake quickly if a hazard develops.

Right foot positioned over the brake pedal
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before making a turn?

120. What should you do before making a turn?

Signal only after you begin turning.
Check only the traffic directly ahead.
Rely on other road users to slow down for you.
✓ Check mirrors, signal, and make sure it is safe.

Before turning, check your mirrors, use your turn signal, and make sure the turn can be made safely.

Driver preparing to turn at an intersection
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is it dangerous to cross between parked cars?

121. Why is it dangerous to cross between parked cars?

✓ Drivers may not see you or expect you to cross.
Pedestrians lose the right-of-way when crossing between cars.
Traffic always moves faster beside parked cars.
Parked cars make the crossing distance longer.

Parked vehicles can block the view between pedestrians and drivers. This makes it harder to see approaching traffic and harder for drivers to see you.

Crosswalk between parked cars
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a tire-pressure warning appears and handling changes?

122. What should you do if a tire-pressure warning appears and handling changes?

Brake firmly to test whether the tire still has grip.
✓ Reduce speed and stop safely to check the tires.
Continue until the warning light goes out by itself.
Release air from the other tires to balance the pressure.

A pressure loss or damaged tire can affect steering and braking. If the tire-pressure warning appears together with a change in handling, it may indicate a serious tire problem. Stop safely and inspect the tires before continuing.

Tire-pressure warning and a tire inspection
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should hard braking be avoided while a motorcycle is leaning in a curve?

123. Why should hard braking be avoided while a motorcycle is leaning in a curve?

✓ It can reduce stability and available tire grip.
It can make the engine overheat.
It prevents the suspension from working.
It makes the motorcycle turn more sharply.

When a motorcycle is leaning, the tires are already using grip to turn. Hard braking can demand additional grip and may reduce stability. Whenever possible, adjust speed before the curve and use smooth, controlled inputs while cornering.

Motorcycle leaning while traveling through a curve
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which selector position is used for normal forward driving?

124. Which selector position is used for normal forward driving?

P (Park).
N (Neutral).
R (Reverse).
✓ D (Drive).

Select D (Drive) for normal forward driving in a vehicle with an automatic transmission. The transmission then selects the appropriate gear automatically.

Automatic gear selector with P, R, N and D positions
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you not drive too close behind another vehicle?

125. Why should you not drive too close behind another vehicle?

It increases tire pressure.
It makes your headlights less effective.
It causes the vehicle ahead to use more fuel.
✓ You may not have enough time to stop.

Driving too close, or tailgating, reduces the time and space available to react and increases the risk of a rear-end collision. Use defensive driving and keep a safe following distance.

Vehicle tailgating the traffic ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Should passengers travel in an ordinary cargo trailer?

126. Should passengers travel in an ordinary cargo trailer?

Yes, if the passengers remain seated on the floor.
Only when the trailer has high sides.
✓ No, passengers should travel in approved seating positions.
Yes, if the trailer is traveling at low speed.

An ordinary cargo trailer is not designed to carry passengers and normally has no suitable seats or restraint systems. Passengers should travel in seating positions designed and approved for carrying people. Special passenger-carrying trailers may be subject to different local rules.

Ordinary goods trailer and passenger safety
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the power steering suddenly stops assisting you?

127. What should you do if the power steering suddenly stops assisting you?

✓ Hold the wheel firmly, use greater steering effort, and stop safely.
Keep driving normally if the vehicle still turns.
Make sharp steering movements to test the remaining assistance.
Accelerate to make the steering easier.

The vehicle can normally still be steered, but much more effort may be required. Reduce speed and arrange an inspection.

Driver coping with a loss of power-steering assistance
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should a motorcyclist react to grooves or ruts in the road?

128. How should a motorcyclist react to grooves or ruts in the road?

✓ Reduce speed and keep a relaxed, steady grip.
Accelerate sharply to cross them quickly.
Grip the handlebars as tightly as possible.
Make quick steering corrections as the bike moves.

Longitudinal grooves or ruts can affect a motorcycle's steering and may make the wheels follow the uneven surface. Reduce speed where necessary, keep a relaxed but steady grip and avoid sudden braking, acceleration or steering corrections.

Motorcyclist approaching grooves in the road surface
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a seat belt is frayed or damaged?

129. What should you do if a seat belt is frayed or damaged?

Twist the damaged section so it cannot tear further.
✓ Have it inspected and replaced before relying on it.
Cover the damaged section and continue using it.
Use it normally if the buckle still locks.

A damaged seat belt may not provide proper protection in a collision. Frayed webbing, damaged buckles, faulty retractors, or other defects should be professionally inspected and repaired or replaced before the seat belt is relied upon.

Frayed or damaged seat-belt webbing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a trailer begins to sway?

130. What should you do if a trailer begins to sway?

Brake hard as soon as the sway begins.
Move into another lane to create more space.
Steer quickly from side to side.
✓ Ease off the accelerator and reduce speed smoothly.

Sudden steering or braking can worsen trailer sway. Stay calm, hold a steady course, and reduce speed smoothly.

Trailer swaying behind a towing vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the brakes fade during a long descent?

131. What should you do if the brakes fade during a long descent?

Shift into neutral and let the vehicle roll freely.
Accelerate between curves to reduce brake use.
✓ Select a lower gear and stop safely to allow the brakes to cool.
Keep pressing the brakes continuously all the way downhill.

Continuous braking can cause overheating and reduced braking performance. A lower gear provides engine braking and reduces demand on the brakes.

Vehicle descending a hill with overheating brakes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why can fog make it difficult to judge the speed of other vehicles?

132. Why can fog make it difficult to judge the speed of other vehicles?

Fog makes vehicles appear larger than they are.
✓ Limited visibility makes distances and movement harder to estimate.
Fog changes the way mirrors show moving vehicles.
Fog makes road markings appear closer together.

Fog reduces visual information, making it harder to judge how far away another vehicle is and how quickly it is approaching.

Other traffic partly obscured by fog
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before entering a freeway?

133. What should you do before entering a freeway?

Signal and expect freeway traffic to make space for you.
Check your mirrors only and assume the blind spot is clear.
✓ Check your mirrors and blind spot, signal, and look for a safe gap.
Move onto the freeway as soon as the lane markings allow.

Observe freeway traffic early, signal clearly, and merge only when there is a safe gap.

Driver checking freeway traffic before merging
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should bicyclists do when riding over loose gravel or road debris?

134. What should bicyclists do when riding over loose gravel or road debris?

✓ Reduce speed and steer smoothly.
Make quick steering movements to avoid loose stones.
Keep the same speed as on a dry, smooth road.
Brake hard while turning.

Loose material reduces tire grip. Smooth steering and controlled speed lower the chance of losing balance.

Bicyclist riding over loose gravel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should a designated driver do?

135. What should a designated driver do?

Do not carry passengers who have been drinking.
Drink only a small amount with food.
✓ Remain alcohol-free for the entire trip.
Drink only low-alcohol drinks.

A designated driver should remain sober so they can drive safely and respond properly to traffic conditions.

Alcohol-free designated driver for a trip
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should luggage be carried on a bicycle?

136. How should luggage be carried on a bicycle?

✓ Securely, without affecting steering, braking, or balance.
On one handlebar if the bag is not very heavy.
On one side of the bicycle to leave the other side clear.
On the rear carrier without securing it for a short trip.

Loose or badly positioned luggage can interfere with control, become caught in the wheels, or hide bicycle lights.

Luggage carried on a bicycle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Where should passengers wait after safely leaving a broken-down vehicle?

137. Where should passengers wait after safely leaving a broken-down vehicle?

Wait just behind the vehicle away from the traffic lane.
Wait close beside the vehicle where drivers can see you.
Stand between the vehicle and the safety barrier.
✓ In a protected place well away from moving traffic.

Move passengers, children, and pets away from the roadway. On high-speed roads, wait behind a safety barrier where possible.

Passengers moving away from a broken-down vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when driving in strong wind?

138. What should you do when driving in strong wind?

Increase speed so the vehicle is less affected by gusts.
✓ Hold the steering wheel firmly and reduce speed if needed.
Use high beams to make your vehicle more visible.
Open the windows to improve aerodynamics.

Strong wind can affect vehicle control, especially near open areas, bridges, large vehicles, bicyclists, and motorcyclists.

Driver controlling a vehicle in strong wind
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you take extra care when crossing a streetcar or bus lane?

139. Why should you take extra care when crossing a streetcar or bus lane?

✓ A streetcar or bus may approach quickly.
These lanes are usually free from moving traffic.
You only need to check for traffic from one direction.
Cars always have the right-of-way over streetcars and buses.

Check carefully before crossing or entering a streetcar or bus lane. Streetcars cannot steer around obstacles, and both streetcars and buses may need significant distance to stop.

Traffic crossing a lane used by public transit
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you normally brake on a motorcycle?

140. How should you normally brake on a motorcycle?

✓ Use both brakes smoothly and progressively.
Alternate between the front and rear brakes.
Apply both brakes as suddenly as possible.
Use only the rear brake.

During normal braking, use both the front and rear brakes smoothly and progressively. The front brake normally provides much of the braking force, while the rear brake also helps slow and stabilize the motorcycle. Sudden or poorly balanced braking can reduce stability or cause a wheel to lose grip.

Motorcyclist using the front and rear brakes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before entering a roundabout?

141. What should you do before entering a roundabout?

Stop before every roundabout, even when it is clear.
Enter first if you reach the roundabout before other traffic.
✓ Slow down and yield when required.
Enter without yielding if you are going straight ahead.

Before entering a roundabout, reduce your speed, observe traffic, and yield according to the local rules.

Vehicle approaching a roundabout
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which gear is normally used when starting from a stop?

142. Which gear is normally used when starting from a stop?

Neutral.
2nd gear.
✓ 1st gear.
Reverse.

1st gear is normally used when starting from a stop because it provides the greatest pulling power at low speed.

Manual gearshift lever and gear-selection pattern
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

143. What does this vehicle-control symbol indicate?

✓ Airflow direction.
Air recirculation.
Cabin fan speed.
Cabin temperature adjustment.

This control selects the direction of the ventilation airflow, such as toward the face, feet, or windshield.

Control for directing cabin ventilation airflow
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

144. What does this dashboard symbol indicate?

Low washer fluid.
Charging-system warning.
Engine-temperature warning.
✓ Low fuel level.

This symbol indicates that the fuel level is low. Refuel soon to reduce the risk of running out of fuel.

Low-fuel warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when branches or debris are blowing onto the road?

145. What should you do when branches or debris are blowing onto the road?

Drive over smaller debris if it appears harmless.
Maintain speed and steer around them when necessary.
✓ Slow down and avoid hazards safely.
Change lanes immediately without reducing speed.

Wind can blow unexpected obstacles onto the road. Reduce speed and avoid them safely.

Wind-blown branches and debris on a road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What is the main purpose of a freeway shoulder?

146. What is the main purpose of a freeway shoulder?

For allowing faster vehicles to pass.
For driving when the freeway is busy.
For stopping to check directions.
✓ For emergencies and breakdowns.

A freeway shoulder is primarily intended for emergencies and breakdowns, not normal driving. In some places it may be opened temporarily as a traffic lane when signs or signals specifically permit this.

Freeway shoulder beside the traffic lanes
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

147. What does this dashboard symbol indicate?

The windshield is frozen.
Engine coolant is too cold.
✓ Risk of icy road conditions.
Winter tires are installed.

This symbol warns that the outside temperature is low enough for ice to form. Road surfaces, especially bridges and shaded areas, may be slippery even when they appear clear.

Icy-road warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

148. What does this vehicle-control symbol indicate?

Adaptive cruise control.
✓ Speed limiter.
Electronic stability control.
Cruise control.

The speed limiter allows the driver to set a maximum speed that the vehicle should not normally exceed while the accelerator is being used.

Vehicle speed-limiter control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid resting your foot on the clutch pedal while driving?

149. Why should you avoid resting your foot on the clutch pedal while driving?

It can lock the steering.
It can increase tire pressure.
✓ It can cause unnecessary clutch wear.
It can apply the parking brake.

Resting your foot on the clutch pedal can apply slight pressure to the clutch mechanism and cause unnecessary wear. Keep your left foot off the clutch when it is not needed.

Foot position near the clutch pedal
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which pedal is used to increase the vehicle's speed?

150. Which pedal is used to increase the vehicle's speed?

✓ The accelerator pedal.
The clutch pedal.
The footrest.
The brake pedal.

The accelerator pedal controls the amount of power delivered by the engine and is used to increase or maintain the vehicle's speed. It is the right-hand pedal.

Accelerator pedal in the driver's footwell
AI-generated by Traffic-rules.com • WCIT • CC BY-SA