Driving Hand Signals: Left, Right and Stop

By Anton Rafalovskyi · Published 6 May 2026 · Last reviewed August 2026

There are three driving hand signals. Left turn: left arm straight out of the window. Right turn: left arm out and bent up at the elbow, palm forward. Slowing or stopping: left arm out and bent down at the elbow, palm back. All three are made with the left arm, because that is the arm a driver behind you can actually see.

They look like a relic, and most drivers go years without using one. Then a bulb goes, or a trailer hides the lights, and the signals are suddenly the only thing telling the car behind what you are about to do. Every state still recognizes them, and they turn up on the permit test in almost all of them.

Left turn

Put your left arm straight out of the window, level with the ground, hand open and fingers together. Hold it there until you start the turn.

The thing that makes it work is that it is the only signal with a straight arm. A driver behind you reads the silhouette long before they can make out your hand, so keep the elbow locked and the arm horizontal. A lazy, drooping arm looks like the slow-down signal, and that is a genuinely dangerous confusion.

Right turn

Left arm out of the window, then bent up at the elbow so the forearm points at the sky, palm facing forward. Upper arm horizontal, forearm vertical, a clean right angle.

Yes, you signal a right turn with your left arm. It reads backwards the first time, and that is exactly why it is on the test. The logic is simple: your right arm is invisible to everyone behind you, so every signal has to be made on the side people can see.

One exception worth knowing: many states also let a cyclist signal a right turn by pointing the right arm straight out, because a bike has no door in the way. Check your own handbook – the rule for cars is the bent left arm everywhere.

Slowing down or stopping

Left arm out, forearm bent down toward the road, palm facing back at the driver behind you. It is the mirror image of the right-turn signal, and the palm is doing real work here – an open palm facing someone is universally read as “hold up”.

This one has no equivalent on your car. Brake lights say you are already braking; this says you are about to. Used a beat early it buys the driver behind you a car length, which on a wet road is the whole margin.

The two people mix up

Up means right. Down means slow. That is the entire distinction, and it is the one that costs people a mark on the permit test.

If you want a hook that survives exam nerves: you point up toward the turn you are making, and down toward the brake pedal you are about to press. Nobody signals a left turn with a bend, so once you can separate up from down you have all three.

When the law actually requires them

Every state has a statute requiring you to signal a turn or a stop, and every one of them accepts either the lights or the hand. That means the signals are not a quaint alternative – they are the legal fallback, and when the lights cannot do the job the hand has to.

In practice you need them when:

• A bulb has failed. Not a hypothetical – you rarely notice a dead rear indicator until someone tells you.
• A load or a trailer covers the lights. Lumber over the tailgate, bikes on a rack, a hired trailer with no wiring.
• The sun is directly behind you. Low winter sun washes out an indicator completely; an arm still casts a shape.
• You are on a bicycle. Most bikes have no lights at all, and cyclists are held to the same signaling law.
• You are riding a motorcycle in a group. Riders use hand signals for far more than turns, and the three basics are the foundation.

Most states also set a distance: signal roughly 100 feet before the turn in town, and further at highway speed. Signaling as you begin the turn is legally late, whether you use a lever or an arm.

How to actually use them

Four things separate a signal that works from one that is technically present.

• Get the arm clear of the door. A hand held just outside the window sits below the eyeline of anyone in an SUV behind you.
• Signal early and hold it. A flick that lasts half a second is a movement, not a message.
• Return both hands to the wheel before you turn. The signal is finished once the turn starts, and one-handed steering through a junction is what an examiner will mark you down for.
• Use them with the lights, not instead. If a bulb is out on one side, the working side plus the arm is far clearer than either alone.

Driving Hand Signals: frequently asked questions