When you are out on the road especially with an open traffic at the highways it is almost impossible to comprehend that nothing can go wrong with you. You are responsible for yourself and your actions on the road because if you are extra cautious about your driving techniques then you should not unnecessarily poke your nose into other driver’s matters.
This is a three way traffic joint and as visible by the truck’s camera that the traffic is quite a bit at this junction. The truck that is seen on the left hand side is really cautious of his moves and is looking out or any traffic that is coming on the way. The cars pull in on the left hand side and the truck is still waiting for any other unexpected traffic when the small car pulls to the left, the truck with the cam signals the huge truck to move on ahead since he shall move left after him. What happened with this stupid signal was that the truck took his go-ahead without taking a look on his left side and ended up getting smashed by another truck who obviously couldn’t control its speed.