Keep left
In Arabic:الزم اليسار
What it means
Pass on the left side of the island or obstacle. It is used where keeping right would lead you into danger.
About regulatory signs
Regulatory signs give orders. A red ring tells you something is not allowed, a blue disc tells you what you must do, and STOP and GIVE WAY have shapes of their own. Speed-limit signs show the number in Western digits with Arabic-Indic digits below.