If you've ever been stuck behind a big truck on a single-lane highway, you know that conventional diesel engines stink. But that exhaust is also health hazard. That's why California has strict rules on diesel engines. But a group of truckers and construction companies wants to loosen the rules. They're suing -- and any challenge to California rules has a ripple effect on other states.
upper waypoint
lower waypoint
next waypoint
Stay on top of what’s happening in the Bay Area
Subscribe to News Daily for essential Bay Area news stories, sent to your inbox every weekday.
To learn more about how we use your information, please read our privacy policy.