Turbo roundabout is a design developed by Bertus Fortuijn. Its design, when combined with appropriate signage, dramatically improves safety and traffic flow, and is surprisingly easy for the unfamiliar driver to navigate.
Queen Elizabeth was born on April 21, 1926. Her full name at birth was Elizabeth Alexandra Mary, and she was born of the royal House of Windsor. Therefore, Queen Elizabeth's last name is Windsor. She married on November 20, 1947 to a man whose name was Lieutenant Philip Mountbatten.
Well, it's simple. King George V, the Queen's father, chose Windsor as the royal surname in 1917, and the Queen's husband Prince Phillip's surname is Mountbatten. There ya go! In William's case, he has a title, so he can take the hyphenated last name or leave it, depending on the situation. Same goes for Princess Charlotte.