I know in some places, like Texas, they seem to presume that you have a tall truck. Anyone with even a normal-height vehicle is thereby put at a severe disadvantage, especially when you try to see past the tall truck that has pulled way far FORWARD past the line, just to stop at a red light.
i.e., it is for measuring the size of one’s dick, even (especially?) for women drivers. Learn to swing it proud, or else never get anywhere in those places!