…the display informs drivers that the lights are synchronized and lets them know the proper speed they must maintain in order to avoid having to stop for a red light. (via What if a speed limit sign told you the most efficient speed to drive? « Nudge blog)
throughout my childhood, my mother would figure this out on her own driving the many roads in our town. i’ve adopted it and can properly reach speeds that are necessary to minimize stoppage. sort of like a real world back to the future.

