Hi is when you are alone at night and want to see farther.
I used to use low in the daytime (to signal other drivers the car is on), and mid at night (to signal other drivers and gain some visibility.
But maybe the opposite is sensible, using mid lights in daytime (so they are more discernible from the daylight), and using low lights in nighttime (if you are in an already illuminated city, you don't need to light up the road, and since it's night, any small headlight will have enough contrast with the darkness)
My car has 3 headlight settings, low, mid, hi.
Hi is when you are alone at night and want to see farther.
I used to use low in the daytime (to signal other drivers the car is on), and mid at night (to signal other drivers and gain some visibility.
But maybe the opposite is sensible, using mid lights in daytime (so they are more discernible from the daylight), and using low lights in nighttime (if you are in an already illuminated city, you don't need to light up the road, and since it's night, any small headlight will have enough contrast with the darkness)