diminutive
Active Member
There comes an overwhelming moral scenario such as when a school bus (50 students) suddenly enters the path of a self-driving semi truck (1 truck driver sleeping in cabin). At some point, it becomes overwhelmingly more favourable to attempt to avoid the school bus, and crash into a rock median or rural forest that obviously has no humans in them.
These are unknowable things; how would the car know there are 50 children on the bus? The bus could well be empty. And yet, swerving a transport truck at high speed to avoid this empty bus could just as easily pose a serious hazard to other road traffic.
Again, decelerating to 50km/h from 100km/h is the best that can be hoped for in these situations.
Imagine a scenario where we discover a self-driving truck killed 15 children because it made a flawed moral decision, and we start to legally wrangle over it -- delaying the permission of full Level 4 freedom on all roads Canada-wide...
There's a reason the law specifically doesn't engage in this kind of speculative moral reasoning. People are judged by whether their actions are reasonable for the circumstances, not moral. It's impossible for drivers (manned or not) to instantly weigh the moral calculus of these situations. In theory there may be cases where the utilitarian response would be to execute some kind of evasive maneuver, but in practice safety will better served by maintaining safe travel distances, being alert and braking at the first sign of trouble.
The amount of situations in which immediate and aggressive breaking won't substantially reduce the likelihood of death/serious injury is probably close to 0. We can all craft thought experiments to prove our arguments ('there's a ticking time bomb...').