I am just coming from Madinat Khalifa police traffic. You just pick them from any counter (ladies) Just be good at saying it in arabic: ukhty mumkin stickers. She'll give you without any clarification. She gave an october 2008 one and i told her my renewal is due on september but she said that is what we have take it or leave it.
Good laws and good law enforcers.

Forgive & Forget.