When lane-use control signals are placed over individual lanes of a street or highway, these signals shall indicate and apply to drivers of vehicles as follows:
(a) A Steady (Downward) Green Arrow. Vehicular traffic may travel in any lane over which a green arrow signal is shown.
(b) A Steady Yellow "X". Vehicular traffic is warned to vacate in a safe manner any lane over which such signal is shown to avoid occupying that lane when a steady red "X" signal is shown.
(c) A Flashing Yellow "X". Vehicular traffic may use with proper caution any lane over which this signal is shown for only the purpose of making a left turn.
(d) A Steady Red "X". Vehicular traffic shall not enter or travel in any lane over which this signal is shown.
(ORC 4511.131)