Rule 75 - The Highway Code

Two Stage Turns. At some signal-controlled junctions there may be signs and markings informing cyclists to turn right in two stages:

Stage 1: When the traffic lights turn green, cyclists wishing to make the turn should go straight ahead to the location marked by a cycle symbol and turn arrow on the carriageway; then stop and wait there

Stage 2: When the traffic lights on the far side of the junction, now facing the cyclists, turn green, they should then complete the manoeuvre