The federal Phase 1 standards required more efficient engines, use of low-rolling-resistance tires, reduced idling, and aerodynamic improvements. (This photo is a spirit of america / Shutterstock.com photograph.)

CARB Working with Feds on New Truck Standards

"We are excited to share the California experience and technical expertise gained from our early actions to reduce emissions and save fuel from the heaviest trucks via our California tractor-trailer greenhouse gas program over the last six years," said Air Resources Board Chairman Mary D. Nichols.

The California Air Resources Board is applauding the announcement by NHTSA and EPA that they will start a rulemaking for Phase 2 fuel economy standards for heavy-duty trucks.

"We look forward to teaming with the federal agencies and strongly support this effort. We are excited to share the California experience and technical expertise gained from our early actions to reduce emissions and save fuel from the heaviest trucks via our California tractor-trailer greenhouse gas program over the last six years," said Air Resources Board Chairman Mary D. Nichols. "The Phase 1 standards that are already in place will reduce these emissions by about 10 percent, and we look forward to developing more ambitious Phase 2 regulations to provide even greater benefits."

The federal Phase 1 standards required more efficient engines, use of low-rolling-resistance tires, reduced idling, and aerodynamic improvements. Phase 1 standards were approved nationally in 2011, and California aligned its heavy-duty vehicle requirements with them two year later.

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