[enugu]

It would not be too costly to augment roads with electronic signalling devices which give information to the software in cars. This information can do what signboards or traffic signals do for humans.

The difficult part - when there is an error in these signals, or things shut down, autonomous cars will suffer much bigger problems than human driven cars.

Its these edge cases that are the problem. We already rely on such mechanisms for planes(information comes from both gorund control and on-flight radar). But a lot of care and resources are is required to get to $n 9's level of reliability.

[ChrisLTD]

> It would not be too costly to augment roads with electronic signalling devices which give information to the software in cars.

Sounds costly to me. There are a lot more roads than airport runways. And then the big question is: Who is going to pay for it?