California Code, Business and Professions Code - BPC § 13421

Every person, firm, partnership, association, trustee, or corporation that owns, leases, or rents and operates a facility that offers any motor vehicle fuel for sale to the public from the facility abutting or adjacent to a street or highway shall turn off all outdoor lighted advertising media at their place of business when they are not open for business.  This section shall only apply to the fueling facility and not the retail business in a situation where the fueling facility is a part of and adjacent to a retail business provided the retail sale of gasoline or other motor vehicle fuel is not the primary purpose of that business.