Crazy drivers everywhere including those high risk motorcyclist! Surprised to see the highway was that busy at 3 a.m. in the morning, unless someone's dashcam clock was at fault (Fix it soon otherwise whatever evidence value is deemed completely useless - hope you don't ever needs it).
Not sure why the trucker flashed the rear light for, the bad driver that cut him off earlier was in front of him. Most big trucks are equipped with bright rear lights to help cargo loading and for hooking up the trailer, so this trucker might have accidentally hit the wrong button.
