The state's Air Resources Board has penalized three state trucking companies a total of $43,000 for diesel truck violations.
The California Air Resources Board issued about 100 citations during the first two weeks of enforcement.
The agency launched a $20 million funding assistance program designed to spur the purchase of hybrid trucks.
The regulation requires annual reductions in the carbon intensity of gasoline and diesel over the next 10 years.
The agency allocated an additional $8 million in compliance assistance funding for retrofits and new truck purchases.
The Overdrive 2010 Owner-Operator Almanac offers maintenance tips and schedules, important dates and useful information to keep you ahead of the curve on what it takes to run a successful owner-operator business.
The cleaner air is due to better technology, not from a slowdown in cargo.
Los Angeles Harbor Commission modifications will allow truckers to continue operating their existing trucks past Jan. 1.
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