Traffic Light Recognition is a technology pioneered by Audi. Vehicles equipped with the technology will receive real-time signals from connected traffic lights via the on-board 4G LTE data connection. When the light is red, the time remaining until the signal changes is displayed in the instrument cluster or heads-up display.
This helpful video explains how Traffic Light Recognition works and how it developed from a small pilot program Audi conducted in Germany in the mid-2000s.