Section 24405 - Lighting of lamps showing to front of vehicle(a) Not more than four lamps of the following types showing to the front of a vehicle may be lighted at any one time: (2) Auxiliary driving or passing lamps.(6) Gaseous discharge lamps specified in Section 25258.(b) For the purpose of this section each pair of a dual headlamp system shall be considered as one lamp.(c) Subdivision (a) does not apply to any authorized emergency vehicle.Amended by Stats. 1976, Ch. 234.