US Department of Transportation 

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California and federal regulators will buddy-up when they release new clean car standards this fall, three state and national agencies said Monday.

The federal Environmental Protection Agency and Department of Transportation will coordinate with the California Air Resources Board when they simultaneously release proposed rules for vehicle fuel economy and carbon emissions on Sept. 1.

California has long been an early adopter of similar guidelines and is known for regulations that are often the strictest in the country. By agreeing to reschedule its announcement from the original March date, the state could be hoping to influence how the federal standards are developed, industry experts suggested.