Volkswagen plans to limit the time staff can remain in certain roles, its supervisory board chairman told a German weekly, in a step to improve oversight at the German carmaker. Volkswagen said in September it had cheated US emissions tests and installed software capable of deceiving regulators, wiping billions of euros off its market value and forcing out its long-standing chief executive. “We are planning a rotation principle for certain functions. The employees concerned will spend only a limited time in certain positions before moving on,” Chairman Hans Dieter Poetsch told ...