Mandatory sign
Keep left
A blue circle with a white arrow pointing down to the left is a mandatory sign: you must pass to the left of it. It is common on traffic islands and central refuges.
When you see it
- ◆ Pass to the left of the sign or island -- it is compulsory.
- ◆ Blue circles command; you must obey them.
- ◆ Move into position early and do not straddle the island.