They have not the foggiest

Pavlovian automatons who instantly reach for the fog light switch - in town! Or when they can clearly see another car 200 yards along the open road! Not ideal for the following driver being blinded (me in this case).
Also motorway matrix signs saying ‘fog’
Thanks for that, motorway sign operatives. I thought for a minute I’d suddenly developed macular degeneration.
Bloomin’ eejits.