If you were starting afresh you'd obviously standardise roads and build them compliantly. But we have a very large installed base of almost infinitely varied configurations.
Surveying they all and feeding in the data would be an enormous task ask then you have to keep pace with all the thousands of constant alterations and additions that are made. So there has to be a compromise, probably (a two (at least) tier road network, those that are surveyed or compliant and those that aren't.
The big problem for me would be millions of cars driving more or less autonomously with drivers who are supposed to be monitoring them, which is clearly not going to work.
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