Cyclists share the same road space as motor vehicles but are far more exposed if something goes wrong, so the Highway Code sets out specific expectations for how drivers should behave around them. Rules covering cyclists sit within the general road users section and were significantly updated in 2022 to reflect a road user hierarchy that places more responsibility on larger, faster vehicles.
This is one of the more heavily tested areas in the hazard perception clip library, because cyclists can be unpredictable — moving out to avoid a drain, wobbling at low speed, or filtering past queued traffic. Understanding why they behave this way helps you anticipate rather than react at the last second.
Safe overtaking distance
Current guidance asks drivers to leave at least 1.5 metres when passing a cyclist at speeds up to 30mph, with more space at higher speeds, and to treat cyclists the way you would another slow-moving vehicle rather than squeezing past. If oncoming traffic or road width means you can't leave that space, you should hold back rather than force the gap.
Learners often underestimate how much room a cyclist needs to hold a straight line, especially near parked cars where they may move out suddenly to avoid a car door opening.
Cycle lanes and advanced stop lines
A cycle lane marked with a solid white line is mandatory during its hours of operation, meaning motor vehicles must not enter it, while a broken line marks an advisory lane you should avoid using unless unavoidable. At many junctions, advanced stop lines create a reserved box ahead of the normal stop line so cyclists can position themselves ahead of queued traffic and pull away safely.
If the lights are red or changing to red, you must stop at the first line, not the advanced one, even if the box looks empty.
Junctions and roundabouts
Cyclists are allowed to position themselves in the centre of a lane at junctions or on narrow sections of road, which can look like they're blocking you deliberately, but it's a positioning technique for their own visibility and safety. On roundabouts, cyclists may stay in the left-hand lane all the way round rather than moving to the correct lane for their exit, so don't assume their lane position tells you where they're going.
Give a wide margin when following a cyclist through a roundabout or junction and resist the urge to overtake right before you both need to turn.
Filtering and being passed
In slow or stationary traffic, cyclists are permitted to filter past on either side, so always check mirrors and blind spots before opening a door or moving off, and use your mirrors again before changing lanes at low speed.
Frequently asked questions
How much space should I leave when overtaking a cyclist?
At least 1.5 metres at speeds up to around 30mph, and more room the faster you're travelling. If you can't give that space safely because of oncoming traffic or a narrow road, you should wait behind the cyclist rather than pass close.
What is an advanced stop line for?
It's a reserved area at some traffic lights that lets cyclists wait ahead of other vehicles so they're visible and can move off first. If the lights aren't green, you must stop at the first white line you reach, not inside the cyclists' box.
Why do cyclists sometimes ride in the middle of the lane?
This is a deliberate positioning technique used on narrow roads or approaching junctions to stop drivers from overtaking dangerously in a space that isn't wide enough. It's expected behaviour, not an obstruction, so hold back until it's safe to pass.
Can cyclists filter past queued traffic?
Yes, cyclists may pass slow-moving or stationary traffic on either side. Always check mirrors and blind spots before moving off, changing lanes, or opening a car door in traffic for this reason.
Is it true that cyclists can stay in the left lane on a roundabout even if turning right?
Yes, this is common and expected, since not every cyclist feels safe crossing lanes of traffic. Don't assume their road position shows their intended exit, and give them room to complete their manoeuvre.