That's what I like about the DRLs (daytime running lights) on four of my cars, all GM products. We never have to turn on lights, day, night, sunny, cloudy, foggy, rainy, whatever.
GM has had them as standard equipment for decades and has tried to get the Feds to make them standard on all cars. It hasn't happened, yet.
Our DRLs are on in all brightly lit conditions. Whenever conditions turn a bit grayer (heavy clouds, dusk, dawn, nightfall, fog, etcetera) the cars automatically turn on dash lights, taillights, and the headlights go to full power. They work flawlessly, even on the 17 year-old Impala with 300+k miles.
I have an older Dodge Caravan with regular old fashioned lights and I have caught myself forgetting to turn those on when conditions indicate they'd be warranted.