Keep right, pass left, never stop in the lane

Slower riders keep right; you overtake on the left, after a glance over your shoulder, exactly as you would change lanes in a car. Undertaking on the right is how collisions happen, because the person you are passing may pull right at any moment to let someone else by.

If someone is overtaking you, hold your line and stay right. Predictable beats polite: they have already chosen their path around you, and moving aside at the wrong moment puts you into it. The same applies when you are being passed by a whole group - keep your line and let them flow past.

Rush hour on a main track moves quickly and in a dense stream, and it does not accommodate hesitation well. If you are riding with friends, go single file when it is busy rather than spreading across the lane. Riding two abreast is legal, but only for as long as it is not obstructing anyone.

The one that catches out almost every visitor: never stop in the cycle track. Not for a photograph, not to check a map, not for ten seconds. Traffic behind you arrives faster than you expect and has nowhere to go. Pull fully out of the track first - onto the pavement, into a side street, anywhere clear - and then stop. And when you are joining a track from a side road or a driveway, the riders already on it have priority.