German regional economic powerhouse Bavaria agreed a slew of measures Tuesday designed to reduce harmful air pollution in cities without pulling diesel vehicles off its roads. Action by the conservative-ruled southern state, home to pillars of Germany's auto industry like BMW and Audi, comes as national politicians grapple with the fallout from schemes to cheat regulatory emissions tests. "We're leading the way in Germany with our measures for cleaner air," state premier Horst Seehofer said, vowing to achieve safe levels of nitrogen oxide in city air "as soon as possible".