Section 21755 Of Article 3. Overtaking And Passing From California Vehicle Code >> Division 11. >> Chapter 3. >> Article 3.

. (a) The driver of a vehicle may overtake and pass another vehicle upon the right only under conditions permitting that movement in safety. In no event shall that movement be made by driving off the paved or main-traveled portion of the roadway.
  (b) This section does not prohibit the use of a bicycle in a bicycle lane or on a shoulder.