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Sequential turn signals
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The turn signals on the freshened Audi A8, which goes on sale in Europe this fall, consist of a string of amber LEDs that light up in sequence. Audi hopes to win U.S. regulatory approval for them. |

Editor's note: An earlier version of this story, which also appeared on Page 10 of the Sept. 30 print edition, mischaracterized Ford’s use of sequential turn signals during the 1960s. They were fitted on some Ford Thunderbirds, Mercury Cougars and Shelby Cobra specialized Mustangs.