The Golden State gets tough on diesel-truck pollution

California’s air regulators cracked down on diesel pollution from heavy-duty trucks on Friday, adopting tough new rules that will require older trucks to be retrofitted or replaced starting in 2011. Diesel trucks are currently responsible for a third of the state’s smog.

California’s air regulators cracked down on diesel pollution from heavy-duty trucks on Friday, adopting tough new rules that will require older trucks to be retrofitted or replaced starting in 2011. Diesel trucks are currently responsible for a third of the state’s smog.

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