When lane use control signals are placed over individual lanes, the signals shall indicate and apply to drivers of vehicles as follows:
(1)  Green indication. A driver may travel in any lane over which a green signal is shown.
(2)  Steady yellow indication. A driver is being warned that a lane control change is in process.
(3)  Steady red indication. A driver shall not enter or travel in any lane over which a red signal is shown.
(4)  Flashing yellow indication. A driver may use the lane only for the purpose of making a left turn to or from the highway.