Yes, a tourist can drive in Germany for a period of 6 months from the date of his entry into Germany without a German license, provided that he has an Emirati license and an international license issued by the United Arab Emirates.
Only partially correct. There is no speed limit on German highways, unless indicated by traffic signs. Therefore, please pay close attention to the road signs. It is well worth noting that the German traffic authorities take the speeding violations seriously: speeding may result in sanctions such as fines, points in Flensburg or a driving ban.