Why can't cars be equipped with a system that when visibility is so bad the fog, if appropriate, lights

[a kennedy]

14. and I did find this......

FAQs: Do tail lights come on with automatic headlights?

Do tail lights activate when I use automatic headlights?

Yes, tail lights, the red lights at the rear of your vehicle, activate simultaneously with your headlights. This synchronization occurs whether you switch on the headlights manually or if they are set to operate automatically.

Are tail lights supposed to be on when the headlights are on?

When you activate the headlights, your vehicle’s tail lights should automatically turn on. Note, however, that while tail lights illuminate with the headlights, brake lights only activate when you press the brake pedal. Sometimes, brake lights may function even if the tail lights do not.

Is the headlight switch responsible for controlling the tail lights?

Indeed, the headlight switch controls the tail lights. However, remember that a separate fuse could also be specifically for the tail lights.

Do tail lights illuminate when daytime running lights are on?

No, tail lights do not turn on when daytime running lights (DRLs) are active. DRLs are designed to be less bright than headlights and are not intended for nighttime use. Typically, tail lights only activate when the headlights are on.

https://autotechgurus.com/do-tail-lights-come-on-with-automatic-headlights/