9-2-6: LANE CONTROL SIGNAL:
Whenever lane control signals are used in conjunction with official signs, they shall have the following meaning:
   (A)   Opaque arrows on green, green arrow on opaque background, or green alone: Drivers of vehicles facing such signals are permitted to use the lanes over which the signal is displayed providing that no intersection traffic control signal gives a stop indication affecting the lane or lanes involved.
   (B)   Opaque "x" on red, red "x" on opaque background, or red alone: Drivers of vehicles facing such signals are prohibited from using the lane over which the signal is displayed.