> most of the US population You do realize that "most" of the US population lives in cities, right? The "rural" population has remained almost constant since t

> most of the US population You do realize that "most" of the US population lives in cities, right? The "rural" population has remained almost constant since the 1960s, while the "urban" population has grown to roughly 5x the rural population's size. Even just counting the largest 100 cities is more than the rural population. Setting that aside for a moment, how does poor signage affect self-driving cars? They're not like humans expecting to take the third left but miscounting, or turning right at the Dairy Queen (which has shut down). They have GPS and full maps. Those maps might not be perfect, but they'll only ever be wrong once if they're part of a system, which is what's being proposed here. To be clear, I'm matching your tone here. Normally I'd try to be a little more understanding and tempered.