This would never be feasible. To start, forget underground magnets and radios. If you just started with properly painted lines, always-functioning traffic signals, and correct street signs, autonomous driving would be much, much easier than it is now.
But the vast majority of the difficulty in autonomous driving is simply dealing with the messiness of the real world. For example, many of the most serious and notable autonomous driving crashes have been the result of faulty road conditions (e.g. https://www.theverge.com/2020/2/25/21153320/tesla-autopilot-... - in that case, the driver wasn't paying attention, but the fact that lane markers were worn down is what caused Autopilot to lose lane tracking, and the fact that crash attenuator in front of the barrier was damaged and not replaced contributed to the driver's death).
Government can't even keep decent lane lines on the roads, and thus I think an autonomous driving system that had to depend on magnets or radios (that failed if those were out) would be even more of a non-starter.
> If you just started with properly painted lines, always-functioning traffic signals, and correct street signs, autonomous driving would be much, much easier than it is now.
If you had this, driving period would be safer, automated or not. And that's before getting into inclement weather conditions where, say, lines or signage may not be visible.
But the vast majority of the difficulty in autonomous driving is simply dealing with the messiness of the real world. For example, many of the most serious and notable autonomous driving crashes have been the result of faulty road conditions (e.g. https://www.theverge.com/2020/2/25/21153320/tesla-autopilot-... - in that case, the driver wasn't paying attention, but the fact that lane markers were worn down is what caused Autopilot to lose lane tracking, and the fact that crash attenuator in front of the barrier was damaged and not replaced contributed to the driver's death).
Government can't even keep decent lane lines on the roads, and thus I think an autonomous driving system that had to depend on magnets or radios (that failed if those were out) would be even more of a non-starter.