One of my past times is watching those videos as well as Fails.
Seems many of those accidents are running of red lights and not driving definsively. The last week I drove to work I saw a utility truck drive onto the parkway with 5 mattress on top secured by one strap. I immediately signaled and moved over to the left lane. Yup, as he drove up to speed the top mattress started to flap and then they all spread across the lanes like a desk of cards dropped on the floor.
As I was watching in my rear view mirror the guy in front of me thought he saw an opportunity to get rear ended and slammed on the brakes. Good thing I had an eye on the road and a eye to the right as I switched lanes and floored it.
Reminds me on a time I was on a back road and this guy was going the speed limit with me in front of me. Like me, he didnt slow down or stop for rail road crossings like most do,or I thought. Well he came to a sudden stop on top of the tracks with no warning, no brake lights. I showed him, I whipped around out him and saw him pounding his steering wheel in my rear view mirror.
While you surf youtube, look up road rage. Its neat to see videos where people cut others off, race them as they try to pass and pull in front of people and slam on the brakes.
Ive always wondered when some cars in order for me to pass takes a good 10-15 mph increase to over take them when previously they were going slow.