What Is the Left-Hand Signal for Traffic?

The left-hand signal used by drivers and cyclists to indicate a left turn is to extend the left arm straight out horizontally, level with the shoulder, pointing to the left. This universally communicates the intent to turn left; related hand signals include raising the left arm upward at a right angle to indicate a right turn (widely accepted in North America) and pointing the left arm downward at a right angle, palm facing back, to signal slowing or stopping.

How to Give the Left-Turn Hand Signal Correctly

Whether you’re a cyclist or a driver using hand signals because your indicators are unavailable or to increase visibility, clarity and timing matter. The left-turn signal must be visible, steady, and given with enough lead time for others to react safely.

1. Check mirrors and blind spots to ensure it’s safe to signal and move.
2. Extend your left arm straight out to the left at shoulder height, keeping the arm fully visible.
3. Hold the signal long enough for others to see—generally at least 3 seconds and, in many jurisdictions, for about 100 feet (30 meters) before the turn at lower speeds.
4. Complete the turn, then return your hand to the wheel or handlebar to maintain full control.

Consistent timing and clear arm placement are essential: signal early, maintain the signal steadily, and keep it visible until you begin the maneuver.

When and Why Hand Signals Are Used

Hand signals are a legal and practical backup when vehicle indicators fail, and they are standard for cyclists and often used by scooter riders. They enhance communication in daylight and in situations where brake or turn lights may be obscured. At night or in poor visibility, pair hand signals with lights and reflective gear so other road users can see you.

The Other Standard Hand Signals (Using the Left Arm)

In addition to the left-turn gesture, road users commonly rely on two other left-arm signals, especially in North America and in cycling guidance worldwide.

• Left turn: Left arm extended straight out horizontally.
• Right turn (left-arm method): Left arm bent upward 90 degrees at the elbow. Note: Many places also allow or prefer extending the right arm straight out to the right for a right turn.
• Slow or stop: Left arm bent downward 90 degrees, palm facing back toward following traffic.

These gestures prioritize visibility and simplicity. Where permitted, pointing in the direction of travel (e.g., right arm straight out for a right turn) can be clearer to others, particularly for cyclists.

Legal Notes and Regional Variations

Core principles are consistent globally, but details vary. Drivers and riders should confirm their local road code. North America widely recognizes the bent-left-arm alternatives for right turns and slow/stop, while many European countries emphasize pointing the arm in the direction of the intended turn.

The following points summarize common practices by region and mode:

• United States/Canada: Left arm straight out for a left turn; left arm up for a right turn; left arm down for slow/stop. Signaling at least 100 feet before turning is commonly required; more time/distance is advisable at higher speeds.
• UK/European Union: Extend the arm in the direction of the turn (left arm for left, right arm for right). The bent-arm alternative for right turns is not standard in many countries; cyclists typically point in the direction of travel.
• Cycling globally: Both approaches are widely taught; at night, use front/rear lights and reflective elements. Some jurisdictions specify minimum signaling time or distance.

Because specifics differ by jurisdiction—and may be updated—always consult your local highway code or driver’s manual for exact requirements.

Safety Tips and Common Mistakes

Clear signaling reduces collisions and confusion. These practical tips help ensure your left-hand signal is seen and understood.

• Make your arm visible—avoid obstructing it with clothing or cargo; use reflective or bright sleeves in low light.
• Maintain lane position and speed predictability; don’t weave while signaling.
• Keep control: for bicycles/scooters, signal briefly and return your hand to the bar; for vehicles, ensure one hand remains on the wheel.
• Use mechanical indicators whenever they function; hand signals supplement or substitute when needed.
• Continue to scan mirrors and blind spots; don’t assume others have seen your signal.

Effective signaling is as much about visibility and timing as it is about the gesture itself; combine all three for safer interactions on the road.

Summary

The left-hand signal for a left turn is the left arm extended straight out, level with the shoulder. It’s widely recognized for drivers and cyclists and is often paired with two related signals: left arm up for a right turn (especially in North America) and left arm down, palm back, to slow or stop. Use the signal early, hold it steadily, and comply with your local road rules to ensure you’re seen and understood by others.

What does the hand signal left arm out and bent downward mean?

The hand signal of a left arm extended out the window and bent downward at the elbow with the palm facing backward means you are slowing down or stopping. This signal is used to communicate your intentions to drivers behind you, especially when your vehicle’s brake lights aren’t working, during an emergency stop, or to provide a clear warning to following vehicles when you need to reduce your speed.
 
How to give the signal

1. Extend your left arm: out the driver’s side window. 
2. Bend your arm at the elbow: to create a downward angle. 
3. Position your palm facing backward: to indicate your deceleration or impending stop. 
4. Hold the signal steadily: until you have come to a complete stop or reduced your speed to a safe level. 

When to use it

• Malfunctioning brake lights: When your car’s brake lights are not working. 
• Emergency stops: To signal an abrupt or unexpected deceleration. 
• Navigating downhill traffic: To provide a clear warning to other drivers when you might need to reduce speed suddenly. 
• Cycling: Cyclists also use this signal to indicate a stop or slowing, which is crucial for safety on the road, according to brainly.com. 

What is the right hand signal?

The right-hand signal is to extend your left arm out of the driver’s window and bend your elbow at a 90-degree angle, with your palm facing forward and your hand pointing upward. This signal indicates to other drivers that you are planning to turn right or change lanes to the right.
 
How to perform the right-hand signal:

1. Check your mirrors: to ensure it is safe to extend your arm. 
2. Extend your left arm: out of the driver’s side window. 
3. Bend your elbow: to create a 90-degree angle. 
4. Point your hand and forearm upward: toward the sky. 
5. Ensure your palm faces forward: to clearly show other drivers your intention. 
6. Keep your arm in this position: until you begin your turn, similar to how you would leave your electronic turn signal on. 

When to use it:

• Malfunctioning turn signal: Opens in new tabThis is a crucial alternative communication method if your vehicle’s right-side turn signals are not working. 
• Cyclists and motorcyclists: Opens in new tabThese are the same signals that bicyclists and motorcyclists should use to indicate their intentions to motorists. 
• Demonstrating knowledge: Opens in new tabYou must know hand signals for a driving test, as examiners want to see that you can use these alternative communication methods. 

Is left blinker up or down?

To activate a left turn signal, you push the turn signal lever down on the left side of the steering column. Pushing the lever up activates the right turn signal.
 
This video demonstrates how to use the turn signal lever to signal a left or right turn: 1mHelpful DIYYouTube · Sep 14, 2017
To Use Your Turn Signals:

1. Locate: the lever on the left side of the steering column. 
2. Push down: on the lever with your left hand to activate the left turn signal. 
3. Push up: on the lever to activate the right turn signal. 
4. Move the lever back to the middle position: to turn the signal off, or it may cancel automatically when you straighten the steering wheel. 

Pro Tip: A good way to remember this is to push the lever in the same direction you want to turn. For a left turn, you push the lever down.

What is the left hand signal when driving?

Make sure your arm is clearly visible to other drivers. Behind. You then we have the left turn hand signal the left turn hand signal is indicated by an arm straight out through the window.