Pass either side

The pass either side sign, a blue circle with two white arrows pointing down to the left and right, means vehicles may pass either side of it to reach the same destination. You usually see it on a traffic island or an obstruction in the road: choose either side and carry on with care.

Official Highway Code caption: “Vehicles may pass either side to reach same destination.”

Listed under “Signs with blue circles but no red border mostly give positive instruction.” in The Highway Code: traffic signs (GOV.UK). For every sign in more detail, see the Department for Transport’s Know your traffic signs.