This was on SH1 and this truck switched lane from the left most lane to the right most lane without braking at all.
I was doing 100 km/h and couldn't stop in time given short distance, so had to use the shoulder. If there wasn't enough room I would have hit the truck.
Normally in a rear-end collision, the car behind is at fault. But in this case, if I hit the truck, would I be at fault?