As we move from relying on humans to relying on machines, we'll need to develop better infrastructure to guide those machines. Our current roads are OK for hum

As we move from relying on humans to relying on machines, we'll need to develop better infrastructure to guide those machines. Our current roads are OK for human drivers, as they are designed heavily around visual signals, we can process and synthesize a lot of visual/audio/learned data well. Machines can process visual data faster than us, but can't synthesize it with other data nearly as well as we can. Adding sensors that passively communicate information, such as the location of lanes, other cars, and humans, will reduce a lot of the issues and edge cases of visual-based ADAS systems. I could imagine a future where cars are always listening for smartphones (or other wearable/implanted sensors) in "pedestrian" mode, which could be used to override regular function and stop the vehicle if detected within a certain distance, or intersecting at a certain trajectory.