Driving hand signals: what learner drivers need to understand

Driving hand signals, called arm signals in the Highway Code, communicate an intention to turn, move sideways, slow down or stop. They are not permission to move. A learner needs to understand what the signal means, who is giving it and whether the surrounding situation makes the intended action safe.

The official Highway Code illustrations show the recognised signals for drivers and cyclists. Use those diagrams alongside this explanation: a description alone is not a good substitute for seeing the movement demonstrated correctly by your instructor.

The three driver arm signals

For the right-hand-drive car illustrated in the Code, the signals use the driver's right arm:

• Turning or moving left: move your right arm in the circular motion shown in the official diagram.
• Turning or moving right: extend your right arm horizontally, as illustrated.
• Slowing or stopping: move your extended right arm up and down, as illustrated.

These movements are distinct. A right arm outside the window does not always mean a right turn: its motion matters. Compare the left-turn circle with the slowing signal in the official diagrams before trying to describe either from memory.

Do not lean out, stretch across the cabin or experiment while driving. If the movement or viewpoint is unclear, ask the instructor to demonstrate while safely stationary. This guide does not prescribe an improvised equivalent for every vehicle layout or physical ability.

Why a cyclist's left signal looks different

The Code's cyclist illustration shows a left arm extended to indicate a move or turn left. That is different from the car driver's right-arm circle. Learn the person and the movement together instead of memorising a rule that every left turn must look identical.

As an observation exercise away from driving, compare two pictures: a cyclist with their left arm out and the driver's circular signal. Ask what intention each communicates. Then compare the driver signalling right with the driver signalling slowing. This helps separate recognition from simply spotting an arm.

When would a driver use an arm signal?

The Code describes arm signals for occasions when direction indicators are not used, or when reinforcing indicators and brake lights is necessary. They remain part of learning even though a modern lesson car normally communicates through its lights.

The DVSA learning-to-drive syllabus includes knowing when and how to signal safely, using indicators and arm or hand signals where appropriate. It also connects communication with road position and checking mirrors. The task is choosing a useful signal without losing control, not performing a gesture simply to show you remember it.

Ask your instructor to explain a relevant situation before attempting anything during a lesson. Knowing the illustration does not by itself establish that giving an arm signal is safe or helpful at that moment.

A signal does not settle the decision

Highway Code Rules 103 and 104 explain that signals must be clear and not misleading, and that signalling gives no priority. They also warn that another vehicle's indicator may have been left on.

Imagine waiting at a junction while an approaching driver signals. The signal tells you something about their apparent intention; it does not establish that your path is clear. Consider the vehicle's movement and the rest of the traffic before deciding what to do. Do not convert one piece of information into certainty about the whole scene.

The same applies when you are signalling. Someone may not have noticed you or may interpret the situation differently. Our blind-spot observation guide explains why checks around the vehicle still matter. Communication and observation support each other; neither replaces the other.

Broken indicators need attention, not a workaround

Learning arm signals does not make a defective vehicle acceptable for an ordinary lesson. GOV.UK's roadworthiness guidance says the driver is responsible for keeping the vehicle safe and should check that all lights work before driving.

If a fault appears during tuition, tell the instructor promptly so they can help you reach a safe stopping place and arrange the appropriate response. Do not treat finishing the planned route as more important than dealing with the defect. An arm signal is not a repair, and this article does not authorise continued driving with faulty lights.

Do not confuse a wave with a recognised signal

A casual wave can mean thanks, an invitation or something you have misunderstood. It is not a reliable description of every hazard around the person waving. You remain responsible for deciding whether your movement is safe.

Also distinguish another road user's intention from an authorised person's direction. Rules 105 onwards cover signals from police and other authorised officers separately. Learn those instructions from the relevant official guidance rather than applying the driver's turning signals to every raised arm you see.

A useful lesson conversation

Before the next lesson, use the official diagrams to identify the intention behind each signal. Note any uncertainty about the movement instead of practising a guessed version. During a stationary discussion, ask your instructor:

• Which signal am I looking at, and what distinguishes it from the others?
• Who could see it from this position?
• What information would I still need before moving?
• Would giving it distract me from controlling this vehicle?

That conversation checks understanding without creating a moving demonstration for its own sake. For help connecting road knowledge with practical tuition, explore our driving courses or contact Learn and Drive. Explain which signals confuse you so the lesson can address the uncertainty directly.