It's also dangerous to drive on the shoulder. Perhaps the safest thing is to keep going while it's obviusly just highway, perhaps a bit under the speed limit (l

It's also dangerous to drive on the shoulder. Perhaps the safest thing is to keep going while it's obviusly just highway, perhaps a bit under the speed limit (low enough to get the attention of other drivers but high enough to not cause collisions). It could navigate to the slowest possible road and just park. Maybe drive with one wheel on the shoulder at 80km/h road on a 90km/h road, with warning lights and headlights blinking, car horn sounding etc. Worst case if the car approaches the end of the highway and there is a shoulder maybe it could stop there. After all, it's what any driver would have to do with a flat tire anyway (the self driving car can't run out and place a warning triangle 100m behind the car though).