Section 25260.3 Of Article 7. Flashing And Colored Lights From California Vehicle Code >> Division 12. >> Chapter 2. >> Article 7.
25260.3
. Any vehicle having personnel aerial lift equipment,
actually engaged in the construction, removal, maintenance or
inspection of any building, structure, or appurtenances thereto,
including the cutting or trimming of trees immediately adjacent
thereto, may display flashing amber warning lights to the front,
sides, or rear when necessarily parked on a highway or when moving at
a speed slower than the normal flow of the traffic.