Section 21454.
Cal. Vehicle Code - VEH § 21454.
in effectWhen lane use control signals are placed over individual lanes, those signals shall indicate and apply to drivers of vehicles as follows:
(a)
Green indication: A driver may travel in any lane over which a green signal is shown.
(b)
Steady yellow indication: A driver is thereby warned that a lane control change is being made.
(c)
Steady red indication: A driver shall not enter or travel in any lane over which a red signal is shown.
(d)
Flashing yellow indication: A driver may use the lane only for the purpose of making a left turn to or from the highway.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026