EPA Grants California Waiver to Exempt Regulations from Federal Preemption

Summary

The US Environmental Protection Agency (EPA) has granted California's request for a waiver of federal preemption to exempt its regulations controlling emissions from off-cycle aggressive driving and air-conditioning usage for vehicles under 8,501 pounds gross vehicle weight rating from federal preemption. This waiver allows California to maintain its regulations, which incorporate EPA's two supplemental federal test procedures (SFTP) and associated certification standards.