What does the exit ring island 123 mean ?

Same as in domestic

You just go to the second exit, at this time you need to drive slowly.

Best to follow Google Navigation, it's safer to look at the pictures and walk.

Starting from the right, the first exit is called Exit 1, the second exit is called Exit 2, the third exit is called Exit 3, and so on.

Just count from the first exit on the right after entering the roundabout, and they are 123 in turn. The 1st exit is equivalent to turning right, the 2nd exit is straight ahead, and the 3rd exit is turning left.

Enter the roundabout, the first exit on the right is 1, straight on to exit 2, and the last exit is 3.

， the exit, pay attention to counting