While I agree with your points - I would say to the contrary that roads are currently marked-up for visible spectrum usage. Road signs and lines are made for co

While I agree with your points - I would say to the contrary that roads are currently marked-up for visible spectrum usage. Road signs and lines are made for consumption within the visible spectrum - some of which may be able to be seen in other light. Though possibly an argument could be made that a self driving car doesn't need to read signs, if it can get that data from a formatted online source. (Eg street names on signs, vs from GPS and maps)