Just one data point from Germany: The legal situation currently makes it illegal to use arbitrary lightning signals in motorized traffic. This has many clear re

Just one data point from Germany: The legal situation currently makes it illegal to use arbitrary lightning signals in motorized traffic. This has many clear reasons, such as reducing stress and distraction and reserving blue warning lights to emergency vehicles, for instance. Given how traditional and cautious Germany is when it comes to new technology, I could imagine that projecting cars have a long way until getting recognized. On the other hand, Germany thinks of itself as a automotive country. Car manufactures have a lot of influence in politics.