> On top of all that is going on in traffic you would add interpreting one more abstracted symbol to your cognitive load?
I think I'd find it a simpler metric to follow than the more qualitative information about car behaviour, as well as more useful to decide whether the car or I should be in control.
You're quite right about timing, I have no idea whether this metric would plummet quickly or gracefully drop so the driver would have time to take charge once a threshold was hit.
I want to stress that this is an underbaked idea and really just a thought experiment about what would make me personally feel more comfortable with driving a semi-autonomous vehicle.
I think I'd find it a simpler metric to follow than the more qualitative information about car behaviour, as well as more useful to decide whether the car or I should be in control.
You're quite right about timing, I have no idea whether this metric would plummet quickly or gracefully drop so the driver would have time to take charge once a threshold was hit.
I want to stress that this is an underbaked idea and really just a thought experiment about what would make me personally feel more comfortable with driving a semi-autonomous vehicle.