Closed Rulemaking

Chapter 173–423 WAC - Low Emission Vehicles

The proposed rule will update Chapter 173-423 WAC (Low Emission Vehicles) to accomplish two things:
  1. Incorporate by reference (IBR) recent changes to California Clean Car regulations to maintain consistency with the California motor vehicle emission standards, and
  2. Incorporate by reference California’s Environmental Performance (EP) label requirement which provides global warming (greenhouse gases) and smog emissions scores for new automobiles.

Filing Date

Type of Activity


Rule adoption


Rule Proposal


Rule pre-proposal
More info: Clean cars
Contact: Neil Caudill (360) 407-6811