Came across this whilst scrolling through Reddit
(apparently) "The driver of the first car was over 80 y.o. and he told the police he wanted to ask the random dude for directions. That why he stopped in no stopping zone… Without any warning, turning signal or anything else. It took an ambulance, helicopter, fire fighters, two police units and 2 hours to deal with and during this time, he didn't even get out of the car. Not even when we were saving the rider's life."
Regardless of the truth to that let's assume it's true, the consensus is driver in the rear must maintain safe distance blah blah, let's assume 1) you have this dash cam footage, and, 2) the rear-endee have it on record with the police report that he stopped for the aforementioned reason, and 3) both have insurance. Is the rear driver at fault no matter what?
It depends on the situation entirely. I was involved in a rear-end accident, being the 3rd car in a 3 car rear-end on a motorway and was not at fault.
The situation gets more complex as I had a safe distance from the car in front, at the last second a car in the middle of 3 lanes attempted to lane change into the left-most lane to turn off at a close exit. I've reduced my speed to try and let him in, he completed the lane change and as soon as that occurred the traffic in front stopped immediately, he's rear-ended the car in front (he had at most a car length or 2 space in a 80km/h zone). I've reacted and put the brakes on, slighting tapping the back of the 2nd car after their collision.
My car escaped with superficial damage (turned out to be worse once assessed, and cost a lot more for the insurance company than it looked at face value) and I drove away after police attended and questioned all of us, the other 2 cars were almost write-offs and were towed away. I think the fact I had little visible damage on my car proved to the officer who attended that I didn't push the 2nd car into the first car etc.
Thankfully it appears that the other 2 drivers stories aligned with mine as we had no dashcams in any of the cars, so the 2nd car was found at fault and I had no excess to pay for my claim.