Authorizes the department of ecology to adopt California zero emission vehicle program regulations.

Removes the requirement for the department of ecology to convene an advisory group to review rules prior to rule adoption.

Removes the requirement for the order of adoption to include the governor's signature.

Expands the types of vehicles required to meet California standards to include medium duty vehicles.

Expands the types of vehicles on which a manufacturer is required to affix a label that discloses comparative greenhouse gas emissions for that new vehicle to include medium duty vehicles.