[needlessly]

Driverless trucks aren't going to 100% perfect. They just need to be significantly safe and more reliable than humans.

Humans get sleepy, get emotional, zone out, and make all kinds of mistakes all the time.

The first generation of driverless trucks will still have a human as passenger to be backup in case of mistakes. You may be thinking, "What's the point if there will still be a human there? s/he might as well drive." Well, humans still need breaks and can help give feedback to Truck for it to improve.

The first generation won't be perfect, but it will be on its way.

[ams6110]

More reliable than humans is too low a bar. People mostly forgive each other's imperfections, not so much a computer's. A self-driving truck is going to need to be at least an order of magnitude or more safer than a human.