That's generally how they work today: each street light has an ambient light sensor on top and switches itself on and off automatically. Occasionally you see on

That's generally how they work today: each street light has an ambient light sensor on top and switches itself on and off automatically. Occasionally you see one that's staying on all the time, presumably because the sensor isn't working. I haven't seen any that do automatic dimming, however. That would be a nice feature.