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How do I cycle safely in traffic?

Road position, being seen, the junction situations that cause most collisions, and communicating clearly with drivers.

Difficulty
beginner
Time
30 min
Read
4 min
Safety
warning

Short answer

Ride about a metre out from the kerb, or in the middle of the lane where it is narrow or at junctions. Never pass a lorry or bus on the inside. Look drivers in the eye at junctions, signal early and clearly, and assume you have not been seen.

Most collisions between bikes and vehicles happen at junctions, and most involve a driver who did not see the cyclist or misjudged their speed. Road position and visibility are the two things a rider actually controls.

Safety

Cycling in traffic carries real risk and the two most serious situations in the UK are being struck by a vehicle turning across you and being caught alongside a large vehicle turning left. Never ride up the inside of a lorry, bus or long vehicle, at a junction or anywhere else, and never stop beside one at lights. Lights and reflectors are a legal requirement after dark. The Highway Code was updated with a hierarchy of road users and specific rules for cyclists at junctions — read the current version rather than relying on what you were told years ago.

Step by step

  1. Ride away from the kerb.About a metre out is the standard primary position for most riding. It keeps you out of drains and debris, gives you room to move left if needed, and makes you much more visible than hugging the edge.
  2. Take the lane where it is not safe to be overtaken.Narrow roads, approaching junctions, at pinch points and around parked cars. Riding in the centre of the lane prevents dangerous close overtakes, and the Highway Code explicitly supports it.
  3. Never pass a large vehicle on the inside.Lorries and buses turning left crush cyclists alongside them, and this is one of the most common causes of cyclist deaths in British cities. Stay behind, or well in front where the driver can see you.
  4. Stay out of the blind spots at lights.Do not stop alongside a large vehicle. Either hold back behind it or get well ahead, in the cycle box, where you are clearly in the driver's field of view.
  5. Ride a door's width from parked cars.At least a metre and a half. Being doored is common and the swerve into traffic is often worse than the door itself.
  6. Make eye contact at junctions.A driver waiting to pull out who has looked at you is very different from one who has looked through you. If you cannot see their eyes, assume they have not seen you.
  7. Signal early and clearly.Look over your shoulder first, signal, then move. The shoulder check is both a safety measure and a signal in itself, because drivers read it as intent.
  8. Be predictable.Hold a steady line, avoid weaving between parked cars and back out again, and do not swerve to the kerb every time a car approaches. Drivers cope well with predictable riders.
  9. Use lights properly.White at the front, red at the rear, legally required after dark and worth using in poor daylight too. A flashing rear light plus a steady one is very effective.
  10. Wear something visible without relying on it.Bright or reflective clothing helps, particularly reflective material on moving ankles and pedals. It is not a substitute for road position and lights.
  11. Watch the front wheels of waiting cars.The wheels start moving before the body does, so they are the earliest indication that a driver at a junction is about to pull out.
  12. Consider training.Bikeability or an adult cycle training session teaches road position and junction technique in a couple of hours and is often free through local councils.

Tips

  • Ride out from the kerb. Riding in the gutter makes you less visible, not safer.
  • Never go up the inside of a lorry or bus. This is the rule that matters most.
  • Watch the front wheels of waiting cars — they move before the car does.

Common mistakes

  • Riding as close to the kerb as possible — It puts you in the debris and drain covers, invites drivers to squeeze past in the same lane, and makes you less visible at junctions. A metre out is safer and is what training teaches.
  • Filtering up the left of stationary traffic to the lights — It puts you into the blind spot of every vehicle you pass, and any of them turning left will not see you. If you filter, do it on the right, slowly, and be ready for traffic to move.

If it doesn't work

Drivers overtake too closely

Cause: Riding too far left, inviting a squeeze — Fix: Move out to primary position; drivers then have to change lanes to pass.

Cars pull out from side roads in front of you

Cause: Not seen, or speed misjudged — Fix: Ride further out, make eye contact, and cover the brakes at every junction.

Nervous in traffic

Cause: Lack of experience with road position — Fix: Take a free adult cycle training session and build up on quieter routes first.

Nearly doored by parked cars

Cause: Riding too close to the parking line — Fix: Ride at least a door's width out, consistently, rather than weaving in and out.

Questions people ask

Should I ride in the middle of the lane?

Yes, where it would be unsafe to be overtaken — narrow roads, approaching junctions, at pinch points and past parked cars. The Highway Code supports this, and moving left again when it is safe helps drivers accept it.

Do I have to use a cycle lane?

No. Cycle lanes are not compulsory, and some are poorly designed, badly surfaced or put you in the door zone. Use them where they help and ride on the road where they do not.

Written and maintained by the GuideHQ editorial team. More in Lifestyle.