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 turns out that the British royal family actually does have a last name, they just don't use it. Before 1917, they didn't have one, but George V changed the family name from the German Saxe-Coburg and Gotha to the House of Windsor. In 1960, Queen Elizabeth II decided that she wanted her direct descendants to be distinguished from the rest, so they, including Harry and William, technically carry the name of Mountbatten-Windsor. While Windsor is from the queen's side, Mountbatten reflects Prince Philip's family name.