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QuizTraffic rulesUruguay

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

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

Traffic signs
Traffic rules
Uruguay
True/false 17 Uruguay 20 Car controls 109 Dashboard lights 40 Priority rules 9 Pedestrians 19 Cyclists 20 Show all 587
What should you do if the pedestrian light is red?

101. What should you do if the pedestrian light is red?

Start crossing if the signal is about to change.
✓ Wait until it turns green.
Cross if there is a large enough gap in traffic.
Cross if another pedestrian has already started.

A red pedestrian signal means you should wait before crossing.

Red pedestrian signal at a crossing
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does AUTO on a windscreen-wiper control normally do?

102. What does AUTO on a windscreen-wiper control normally do?

Runs the wipers continuously at maximum speed.
Sprays washer fluid automatically.
✓ Operates the wipers automatically when rain is detected.
Operates only the rear wiper.

When AUTO is selected, a rain sensor can operate the windscreen wipers automatically and adjust their operation according to the amount of moisture detected on the windscreen.

AUTO setting on the windscreen-wiper control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if fog becomes so thick that you cannot see safely?

103. What should you do if fog becomes so thick that you cannot see safely?

Follow the vehicle ahead closely for guidance.
Use main beam and keep driving.
✓ Slow down and stop in a safe location away from traffic if necessary.
Continue slowly by following the road markings.

If visibility becomes dangerously poor, find a safe place to stop rather than continuing without being able to see clearly.

Dense fog obscuring the road ahead
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you not drive too close behind another vehicle?

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

It increases tyre pressure.
✓ You may not have enough time to stop.
It causes the vehicle ahead to use more fuel.
It makes your steering less responsive.

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
What should you do if steam begins coming from underneath the bonnet?

105. What should you do if steam begins coming from underneath the bonnet?

Continue driving slowly until the steam stops.
Pour cold water over the engine immediately.
✓ Stop safely, switch off the engine, and keep clear until it has cooled.
Open the coolant cap to release the pressure.

Steam can indicate an overheated and pressurised cooling system. Do not remove the coolant cap while the system is hot.

Steam rising from underneath a vehicle's bonnet
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you realise you have put the wrong fuel in your vehicle?

106. What should you do if you realise you have put the wrong fuel in your vehicle?

✓ Do not start the engine, and seek assistance.
Start the engine and drive slowly to use the fuel.
Drive until the fuel warning light comes on.
Add the correct fuel and continue driving.

If you have used the wrong fuel, do not start the engine. Starting it can circulate the incorrect fuel and cause further damage. If possible, avoid switching on the ignition and seek appropriate roadside or workshop assistance.

Fuel nozzle and the risk of misfuelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

107. What does this dashboard symbol indicate?

Parking brake applied.
Electronic stability control.
Low tyre pressure.
✓ Anti-lock braking system warning.

This symbol indicates a possible fault with the anti-lock braking system (ABS). Normal braking may still be available, but ABS may not operate during heavy braking, so the system should be checked.

Anti-lock braking system warning symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you slow down before a sharp bend?

108. Why should you slow down before a sharp bend?

To reduce fuel consumption.
To prevent other vehicles from overtaking.
✓ To keep control of the vehicle.
To make the steering feel lighter.

Sharp bends reduce your view and can make the vehicle harder to control, so you should slow down before entering the bend.

Vehicle approaching a sharp bend
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the power steering suddenly stops assisting you?

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

Accelerate to make the steering easier.
Switch off the engine while moving to reset the system.
Make sharp steering movements to test the remaining assistance.
✓ Hold the wheel firmly, use greater steering effort, and stop safely.

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
What should you do about a chip in the windscreen?

110. What should you do about a chip in the windscreen?

Cover the chip so it cannot spread.
✓ Have it assessed and repaired promptly.
Wait until the chip becomes a larger crack.
Ignore it if it is outside your direct view.

A chip can obstruct your view, weaken the glass, and develop into a larger crack. Have it checked and repaired promptly.

Stone chip in a vehicle's windscreen
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you never leave a child or pet alone in a parked vehicle on a warm day?

111. Why should you never leave a child or pet alone in a parked vehicle on a warm day?

The windows may become difficult to open.
The vehicle battery may discharge more quickly.
✓ The interior can heat up quickly and cause serious heat illness.
The alarm system may activate unexpectedly.

The inside of a parked vehicle can heat up rapidly, even when the outside temperature does not feel extreme. Children and animals are particularly vulnerable to overheating and heatstroke. Leaving a window partly open does not make the vehicle safe.

Parked vehicle and the danger of interior heat
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should motorcyclists take extra care on wet metal covers?

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

They can make the tyres overheat.
✓ They can provide much less grip than the surrounding road.
They can make the suspension become stiffer.
They can cause the tyre 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
What is the main emergency number in Uruguay?

113. What is the main emergency number in Uruguay?

000.
✓ 911.
123.
112.

The main emergency number in Uruguay is 911.

911 emergency telephone number
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

114. What does this vehicle-control symbol indicate?

Electric window control.
Central door locking.
Seat adjustment.
✓ Exterior mirror folding.

This control folds or unfolds the vehicle's exterior mirrors. It is useful when parking in narrow spaces or when leaving the vehicle parked.

Control for folding the exterior mirrors
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you normally hold the steering wheel while driving?

115. How should you normally hold the steering wheel while driving?

With one hand at the top of the wheel.
✓ With both hands in a balanced position.
With one hand resting on the gear lever.
With both hands together at the bottom.

Hold the steering wheel with both hands in a balanced position so that you can steer smoothly and react quickly. A position around nine and three o'clock generally provides good control.

Driver holding the steering wheel with both hands
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How can unnecessary weight affect a vehicle's energy use?

116. How can unnecessary weight affect a vehicle's energy use?

It makes the vehicle easier to accelerate.
✓ It can increase the energy needed to move the vehicle.
It always reduces fuel consumption.
It improves braking efficiency.

Extra weight generally requires more energy when accelerating and climbing. Removing unnecessary heavy items can help reduce fuel or energy consumption while keeping all essential equipment in the vehicle.

Extra luggage adding weight to a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do after stopping because of a breakdown?

117. What should you do after stopping because of a breakdown?

Switch off the hazard lights once the vehicle has stopped.
Leave the parking brake off if the road is level.
✓ Apply the parking brake, switch off the engine, and use hazard lights.
Leave the engine running and keep the vehicle in neutral.

Secure the vehicle so that it cannot move and use the hazard warning lights to alert approaching traffic. Where required and safe, place a warning triangle to give additional warning.

Broken-down vehicle with hazard warning lights
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should a motorcyclist avoid riding in another vehicle's blind spot?

118. Why should a motorcyclist avoid riding in another vehicle's blind spot?

✓ The driver may not be able to see the motorcycle.
The motorcycle will use more fuel.
The motorcycle's indicators may be harder to see.
The motorcycle's brakes may become less effective.

Motorcycles can be difficult to see, particularly when they remain in another vehicle's blind spot. Avoid staying alongside a vehicle where the driver may not see you, and choose a position where you are more likely to be visible.

Motorcycle in another vehicle's blind spot
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do when passing pedestrians on a shared path?

119. What should cyclists do when passing pedestrians on a shared path?

Assume they will hear you approaching.
Pass quickly before they change direction.
✓ Slow down, give warning, and leave enough space.
Use your bell and keep the same speed.

Pedestrians may change direction unexpectedly. A warning and safe passing distance reduce the risk of a collision.

Cyclist passing pedestrians on a shared path
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the AUTO setting on the lighting control do?

120. What does the AUTO setting on the lighting control do?

It switches on the front fog lights.
✓ It switches the headlights on or off automatically when needed.
It switches on the hazard warning lights.
It keeps the main beam switched on.

The AUTO lighting setting allows the vehicle to switch its exterior lights on or off automatically according to ambient light conditions. The driver remains responsible for ensuring that the correct lights are being used.

AUTO setting on the vehicle's lighting control
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should cyclists do after a collision or hard fall?

121. What should cyclists do after a collision or hard fall?

Check only the bicycle and ignore minor injuries.
Test the bicycle by riding it before checking for damage.
Check only the parts that were directly involved in the fall.
✓ Check yourself and inspect the bicycle before riding again.

A fall can damage the brakes, wheels, frame, handlebars, or helmet. Injuries may also not be immediately obvious.

Checking a bicycle after a fall or collision
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

122. What does this dashboard symbol indicate?

An engine-management fault.
A brake-system fault.
✓ A general warning requiring attention.
Low tyre pressure.

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
What does this vehicle-control symbol indicate?

123. What does this vehicle-control symbol indicate?

✓ Horn.
Parking assistance.
Cruise control.
Hazard warning lights.

This symbol indicates the horn control. The horn is used to warn other road users of your presence when necessary.

Vehicle horn control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this dashboard symbol indicate?

124. What does this dashboard symbol indicate?

✓ Adaptive cruise control.
Electronic stability control.
Automatic start-stop system.
Lane-departure warning.

This symbol relates to adaptive cruise control (ACC). The system can maintain a selected speed and automatically adjust the vehicle's speed to help maintain a set distance from traffic ahead.

Adaptive cruise-control symbol on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you check after fitting a wheel?

125. What should you check after fitting a wheel?

That the tyre is touching the wheel arch.
✓ That the wheel nuts are tightened correctly.
That the jack remains partly under the vehicle.
That the wheel can move slightly on the hub.

After fitting a wheel, make sure the wheel nuts are tightened correctly using the manufacturer's specified procedure and torque. Incorrectly tightened wheel nuts can loosen or damage the wheel. Recheck them later if the vehicle or wheel manufacturer recommends it.

Checking wheel nuts after fitting a wheel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if your main beam could dazzle another driver?

126. What should you do if your main beam could dazzle another driver?

✓ Switch to dipped headlights.
Reduce speed but leave the main beam on.
Keep the main beam on unless the other driver flashes you.
Flash the main beam briefly before passing.

Main beam can dazzle other road users and reduce their visibility. Switch to dipped headlights whenever your main beam could dazzle another driver.

Headlight glare affecting another road user
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should you approach a sharp bend on a mountain road?

127. How should you approach a sharp bend on a mountain road?

Move toward the centre of the road for a better view.
✓ Reduce speed before the bend and remain in your lane.
Brake hard while turning through the bend.
Accelerate through the bend to maintain momentum.

Mountain bends may hide oncoming vehicles, cyclists, animals, or debris. Slow down before entering and keep a safe road position.

Sharp bend on a mountain road
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

128. What does this vehicle-control symbol indicate?

✓ Electric window control.
Mirror adjustment.
Window lock.
Central door locking.

This control operates the vehicle's electric windows. Pressing or pulling the switch lowers or raises the corresponding window.

Switch for operating an electric window
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a red warning light appears with an unusual noise?

129. What should you do if a red warning light appears with an unusual noise?

Stop only if another warning light appears.
✓ Stop safely, switch off the engine, and seek assistance.
Wait until the next service to have it checked.
Continue slowly if the vehicle still responds normally.

A red warning combined with an unusual noise may indicate a serious fault. Continuing could cause damage or loss of control.

Red dashboard warning requiring the driver's attention
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
How should pets be carried safely in a vehicle?

130. How should pets be carried safely in a vehicle?

On the driver's lap if they remain calm.
Loose on the front passenger seat.
✓ Securely restrained so they cannot distract the driver or move dangerously.
Beside an open window so they can see outside.

A pet moving freely inside a vehicle can distract the driver and may be thrown around during sudden braking or a collision. Use a suitable carrier, harness, barrier, or other secure restraint appropriate for the animal and vehicle.

Pet travelling inside a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does the ON position of a traditional ignition switch normally do?

131. What does the ON position of a traditional ignition switch normally do?

✓ Switches on the vehicle's electrical systems without operating the starter.
Switches off all electrical accessories.
Locks the steering.
Turns the starter motor.

The ON position normally switches on the vehicle's electrical and ignition systems without operating the starter motor. The engine is started by turning the key further to the START position.

ON position on a traditional ignition switch
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if the charging-system warning light comes on?

132. What should you do if the charging-system warning light comes on?

Continue driving until the battery is completely discharged.
Restart the engine repeatedly to reset the warning.
✓ Reduce electrical use, stop safely, and seek assistance.
Switch on more electrical systems to test the battery.

The alternator or charging system may have failed. The vehicle may stop once the remaining battery charge is exhausted.

Charging-system warning illuminated on the dashboard
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should cyclists avoid riding in a large vehicle's blind spot?

133. Why should cyclists avoid riding in a large vehicle's blind spot?

✓ The driver may not be able to see them.
Blind spots matter only when a vehicle is reversing.
The driver can always hear a cyclist beside the vehicle.
Large vehicles always have priority when turning.

Buses and trucks have large areas where the driver cannot see cyclists, especially beside the vehicle and near turns.

Cyclist in a large vehicle's blind spot
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do when driving near animals?

134. What should you do when driving near animals?

Maintain speed if they remain beside the road.
Move closer so you can pass before they react.
✓ Slow down and be ready to stop.
Sound your horn to make them move away.

Animals can move unpredictably. Slow down, stay alert, and be prepared to stop safely.

Animals near moving road traffic
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if you smell fuel or see fuel leaking from your vehicle?

135. What should you do if you smell fuel or see fuel leaking from your vehicle?

✓ Stop, switch off the engine, avoid flames or sparks, and call for assistance.
Wash the leaking fuel away with water.
Ignore a small leak if the fuel level remains stable.
Restart the engine to check whether the leak continues.

Leaking fuel creates a serious fire risk. Keep people away, do not restart the engine, and arrange professional assistance.

Fuel leaking from a vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you check your mirrors before braking?

136. Why should you check your mirrors before braking?

✓ To know what is happening behind you.
To decide which gear to use while slowing down.
To shorten the distance needed to stop.
To check whether the road surface is slippery.

Checking your mirrors helps you understand what is happening behind you and anticipate how following traffic may react. In an emergency, do not delay necessary braking.

Driver checking following traffic before braking
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What does this vehicle-control symbol indicate?

137. What does this vehicle-control symbol indicate?

Rear window demister.
Air conditioning.
Heated steering wheel.
✓ Seat heating.

This control activates the seat heating, which warms the seat cushion and, on many vehicles, the backrest. Several heat levels may be available.

Heated-seat control and symbol
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Does the priority-to-the-right rule apply in Uruguay?

138. Does the priority-to-the-right rule apply in Uruguay?

No.
✓ Yes.

In Uruguay, the priority-to-the-right rule generally applies at uncontrolled intersections.

Vehicle approaching a junction from the right
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if a large animal suddenly enters your path?

139. What should you do if a large animal suddenly enters your path?

Accelerate to pass before the animal moves.
✓ Brake firmly while keeping control of the vehicle.
Release the steering wheel and brake hard.
Swerve sharply into another lane.

If a large animal enters the road, brake firmly while keeping the vehicle under control. Avoid sudden swerving, as this can cause you to lose control or collide with other traffic.

Large animal entering a vehicle's path
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should hard braking be avoided while a motorcycle is leaning in a bend?

140. Why should hard braking be avoided while a motorcycle is leaning in a bend?

It prevents the suspension from working.
It can make the engine overheat.
✓ It can reduce stability and available tyre grip.
It increases tyre pressure immediately.

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

Motorcycle leaning while travelling through a bend
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
When should you select R (Reverse) in an automatic vehicle?

141. When should you select R (Reverse) in an automatic vehicle?

While the vehicle is still moving forward slowly.
Before pressing the brake pedal.
Whenever you want to reduce speed.
✓ After the vehicle has come to a complete stop.

Select R (Reverse) only after the vehicle has come to a complete stop. Selecting Reverse while the vehicle is still moving forward can damage the transmission.

Selecting Reverse in a stationary automatic vehicle
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Which pedal is used to increase the vehicle's speed?

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

The footrest.
✓ The accelerator pedal.
The brake pedal.
The clutch 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
Why should you be careful when driving beside a bus at a stop?

143. Why should you be careful when driving beside a bus at a stop?

✓ Passengers may step out or cross near the bus.
A stopped bus always has priority over passing traffic.
Vehicles beside a bus must always stop and wait.
Bus stops usually have a lower speed limit.

Stopped buses can hide pedestrians, and passengers may cross unexpectedly. Slow down and be ready to react.

Vehicle passing a bus at a stop
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why can mixing alcohol with medicine be dangerous for drivers?

144. Why can mixing alcohol with medicine be dangerous for drivers?

Medicine can cancel out the effects of alcohol.
✓ The combination may increase drowsiness or impairment.
Alcohol leaves the body faster when taking medicine.
The combination is safe if taken with food.

Some prescription and non-prescription medicines can intensify alcohol-related drowsiness, dizziness, poor coordination, or reduced concentration.

Alcohol and medicine as a driving-impairment risk
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do before releasing the parking brake on a slope?

145. What should you do before releasing the parking brake on a slope?

Select neutral and release all pedals.
✓ Make sure the vehicle is securely controlled before releasing it.
Turn the steering wheel fully.
Press the accelerator fully.

Before releasing the parking brake on a slope, make sure the vehicle cannot roll unexpectedly. Use the service brake or, when moving off in a manual vehicle, establish the clutch biting point and sufficient power before releasing the parking brake.

Preparing to release the parking brake on a slope
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why should you avoid travelling with the seatback excessively reclined?

146. Why should you avoid travelling with the seatback excessively reclined?

It can prevent the head restraint from being adjusted.
It can make the airbag deploy earlier.
It can cause the seat to slide forwards when braking.
✓ It can reduce how effectively the seat belt restrains you.

An excessively reclined seat can affect how the seat belt fits and restrains your body and may increase the risk of sliding under the lap belt in a collision. Sit in a reasonably upright position so the lap belt stays low across the hips and the shoulder belt lies correctly across the chest.

Vehicle seat with an excessively reclined backrest
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if fuel spills while you are refuelling?

147. What should you do if fuel spills while you are refuelling?

Wash the spill away with water and continue refuelling.
Ignore the spill if only a small amount escaped.
Continue filling the tank and clean it up afterwards.
✓ Stop refuelling, avoid ignition sources, and alert station staff.

If fuel is spilled, stop refuelling immediately and keep flames, sparks, and other ignition sources away. Do not start the vehicle until the situation is safe. Alert filling-station staff and follow their instructions for dealing with the spill.

Fuel spilled during refuelling
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do if an EV charging cable or connector is damaged?

148. What should you do if an EV charging cable or connector is damaged?

Cover the damaged area and continue charging.
✓ Do not use it, and report or arrange repair of the damage.
Use it if the vehicle still begins charging.
Hold the damaged section away from the vehicle.

Do not use a damaged charging cable or connector. Damage can create a risk of electric shock, overheating, or fire. Use suitable undamaged charging equipment and report the fault or arrange professional repair or replacement.

Damaged electric-vehicle charging cable or connector
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
What should you do with the steering wheel after completing a turn?

149. What should you do with the steering wheel after completing a turn?

Turn it quickly in the opposite direction.
Release it completely and let it spin freely.
✓ Guide it smoothly back towards the straight-ahead position.
Hold it in the turned position.

After completing a turn, guide the steering wheel smoothly back towards the straight-ahead position while maintaining control. Do not allow the wheel to spin freely through your hands.

Guiding the steering wheel back after a turn
AI-generated by Traffic-rules.com • WCIT • CC BY-SA
Why is a microsleep especially dangerous while driving?

150. Why is a microsleep especially dangerous while driving?

✓ You can lose awareness of the road for several seconds.
It makes the steering feel heavier.
It usually makes you drive more slowly.
It only affects your ability to hear.

A microsleep is a brief, involuntary episode of sleep that can last for a few seconds. During that time, you may lose awareness of the road and travel a considerable distance without reacting to hazards.

Driver losing alertness at the wheel
AI-generated by Traffic-rules.com • WCIT • CC BY-SA