A question for all you drivers out there.

Pray tell, what on earth does this sign mean ?

If I had to guess, I'd say a big green round circle is an "OK anything goes" sign.  

It's on the median as you're exiting from the mini-strip mall where my doctor's office is located.  Since  you can only turn right,  why didn't they put up a "no left turn" sign ?

I'm stumped.

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