@RandomDamage @thomasfuchs I agree! But I just struggle to believe that many people would look at the back of this vehicle and interpret meaning in those shapes. There's too much other context going on - this is a car, there's a lamp on both sides, like all cars the side the lamp is on will flash to indicate a turn.
If you even get to the point of recognizing it's an arrow, I don't know how you could then think that they mean anything at all since they're pointing inward.