Chapter 5. Switchblade Knife of California Penal Code >> Division 5. >> Title 3. >> Part 6. >> Chapter 5.

Every person who does any of the following with a switchblade knife having a blade two or more inches in length is guilty of a misdemeanor:
  (a) Possesses the knife in the passenger's or driver's area of any motor vehicle in any public place or place open to the public.
  (b) Carries the knife upon the person.
  (c) Sells, offers for sale, exposes for sale, loans, transfers, or gives the knife to any other person.

The unlawful possession or carrying of any switchblade knife, as provided in Section 21510, is a nuisance and is subject to Sections 18000 and 18005.