If you own a diesel-powered rig that’s over 10 years old in the state of California, it’s now illegal to drive it on the roads, thanks to a new law that went into effect January 1 of this year.In 2008, California Air Resources Board (CARB) approved legislation to curb emissions from old trucks and buses within the state.While this has the potential to upend the trucking industry given the compliance required for these vehicles to continue to operate, there are ways around the ban.Exceptions can be made for older vehicles that have engine replacements that are from 2010 or newer and vehicles that drive less than 1,000 miles annually.The Air Resources Board says that many operators and fleets have already complied with the new rules with over 1.5 million vehicles being fitted with newer and cleaner engines."