Why signalling matters
A cyclist is much smaller and quieter than most other traffic, and has no indicator lights unless they have fitted some. Signals are how you turn a private decision (“I am going to turn left”) into something others can read. A clear signal gives drivers, walkers and fellow riders a little more time to react, which is usually the whole point.
Signals are a courtesy and a safety aid, not a guarantee. Other people may not notice them, may not know what they mean, or may not respond as you hope. Treat a signal as one layer of communication alongside good positioning, eye contact and a steady line.
Rules differ by country
Hand signals are not the same everywhere. In some countries a cyclist is expected to use the left arm for left turns and either the right arm or a bent left arm for right turns. In others there is a single preferred way, and some places have no formal cycling signals at all. Cycling clubs and organised group rides often add their own habits on top.
Because of this, check the rules where you ride, such as the highway code or cycling guidance published by your local authority. This article describes common conventions in general terms and is not legal advice.
The core signals
Most signalling comes down to a handful of gestures.
- Turning left: the left arm held out to the side, roughly level with the shoulder.
- Turning right: commonly the right arm held out to the side. In some places a bent left arm with the hand pointing up is also recognised.
- Slowing or stopping: often an arm held out low, with the palm facing backwards, or a hand raised or patted up and down. Meanings vary, so a quick spoken call can help when riding with others.
- Pointing out a hazard: a hand or finger pointing towards the problem, such as a pothole or a drain, often with a short call.
The detail of each one is covered in our guides on how to signal a turn safely and how to signal when stopping or slowing, so here the focus is on the bigger picture.
Signal early, then both hands back on the bars
A useful rhythm is to look, signal, then act. Check behind you with a shoulder check, give the signal for long enough that it can be seen and understood, and return your hand to the bars before the manoeuvre itself, especially if the surface is rough or you need to brake.
Riding with one hand is a skill that takes practice. If you are new to it, work on one-hand drills in a quiet, flat, traffic-free place such as an empty car park, at a slow speed, wearing a helmet. If you do not feel steady, it is reasonable to slow down or stop before you signal, or to skip the signal and rely on positioning and a clear look at the driver instead. Never signal in a way that makes you wobble, and keep your fingers near the brake lever when you can.
When to keep both hands on the bars
There are times when taking a hand off is the wrong call:
- on rough, wet, gravelly or cobbled surfaces
- while braking hard or going downhill
- in tight spaces or when passing close to other people
- when you are carrying a load or towing something that affects steering
- when the signal would be given after you have already started the turn
In these cases, signal earlier where the road is smoother, or use a spoken warning and clear positioning. Being predictable matters more than any single gesture.
Verbal calls and the bell
Voice and bell are signals too. A short, friendly “on your right” or “car back” carries further than most hand gestures, especially at the back of a group. On paths shared with walkers, bike bells are often the easiest way to announce your presence without startling anyone. Keep calls short and calm, and avoid shouting where a normal voice will do.
When riding with others, it helps to agree a handful of calls before you set off. A leader might explain what “slowing”, “stopping”, “hole” and “car up” will sound like, so nobody has to guess in the moment. Group hand signals tend to be passed back along the line, so each rider repeats what they see for those behind them.
Eye contact and body language
Gestures are only part of the picture. Looking at a driver at a junction, and noticing whether they look back, tells you more than an arm held out ever will. Keep your head up, scan ahead, and make your path obvious: ride in a steady line, avoid sudden swerves, and slow down early when you intend to stop. This is the heart of predictable riding, and it matters even more than the arm you use.
Lights and reflective clothing are part of communication as well. After dark or in poor light, a clear front and rear light make your signals easier to understand because people can actually see you.
Practising signals
Like any skill, signalling gets easier with repetition. Try these in a quiet, traffic-free area:
- Ride slowly in a straight line and lift one hand for a second or two, then return it.
- Add a glance over your shoulder before the signal, keeping the bike steady.
- Practise with each arm, because you may need to signal either way.
- Once that feels natural, try the full routine: look, signal, look again, then turn.
Progress in small steps, and stop if you feel unsteady. If you have difficulty with balance or have a physical condition that affects your arms, a bike shop or qualified instructor can suggest alternatives such as spoken warnings, a bell or fitted indicator lights.
Putting it together
Good communication on a bike is a habit rather than a single skill. Look first, signal clearly when it is safe to do so, keep control of the bike, and back your gestures up with positioning, voice and eye contact. When in doubt about local conventions, check the rules where you ride and follow the lead of experienced riders around you.