The truck saw the car.
The truck had time to move left. He clearly saw the car.
The truck never even tried to hit his breaks or slow down.
The truck hit the car either on purpose, or undue care and attention.
The truck driver was distracted on his phone, and never missed a beat in his conversation.

The car was a full car length ahead of the truck when it started to merge - If I could see the car signaling, he could have seen the car signaling. There was room.

We all know that trucks have a longer stopping time. But a single tap on the break instead of holding his foot on the accelerator would have avoided the collision.
And no, the traffic wasn't slowing down ahead - they were all passing and keeping what looks like a steady pace.
If the truck thought he needed to warn the car, he could have used his horn, but he was too busy on his phone.

Okay, what everyone else typed, sorry, but TLDR for the most part.

The sedan did absolutely nothing wrong at all. There was plenty of room. It was clearly visible to the trucker, and it signaled its intention to change lanes before doing so. No problem. It would have been wiser to pull in behind the truck (presumably, who knows what's going on back there) because trucks don't stop on a dime, but in heavy traffic, I wouldn't fault the sedan's maneuver at all.

The truck driver should have his license revoked. Anyone who would deliberately risk a road accident as a matter of pride shouldn't be driving.

Safe to the extent that there was room, with a car length behind and ahead... That is how most people drive in town, or with less room. You do realize this is on a freeway, not in town, right. At freeway speeds, that space was too tight to be safe. Putting a car in that space makes that car immediately at an unsafe close distance to the car in front of it and behind it. At 60mph less than a car length between you is unsafe.

You also still seem to be repeating that the truck had no business being in the fast lane? Look at the start of the video, our truck driver is having to SLOW DOWN to match the speed of traffic in the fast lane. He absolutely is not too slow for that lane.

Finally, per the space available for that lane change, there is no way that car makes a lane change into a space that small, and does it that slowly without ever checking their shoulder, unless they are a terrible, terrible driver.

No matter whos at fault, the insurance company will have a very good chance to deny any payments because the truck driver could have avoided the accident easily, no matter what. Instead he actually seemed to have sped up or left his foot on the gas. That I am sure will break his neck in court.

1. Watch before second 10, he's not closing (4 lines between him and the truck). Watch again starting at second 15, he starts closing. (down to under 3 lines between him and the truck, and less than one between him and the first car). Proof to me he sped up, since you can see the blue truck didn't slow down (passes the other truck at a constant rate).
2. He sped up like a car...brakes work better than acceleration on a semi., he should have gone with the larger pedal.
3. No, traffic ahead seems to go the same speed throughout. Traffic is clear ahead of them, and no brake lights from the truck.
4. Yes, you can hear it. Case closed IMO, and a concession of your point #one. He sped up, blocked the spot (illegal), and caused an accident he could have easily avoided (also illegal, right of way or not), therefore his fault.
5. Yes, definitely unsafe passing on the right. In Cali, it's also illegal to stay in the fast lane if someone is going faster than you..."Slower Traffic MUST Keep Right" signs are everywhere, just ignored....so a bit of a wash that, in this state. Truck and car were doing their thing both in the wrong lane by our rules.
Also important, the truck driver was distracted by being on the phone. Distracted driving is actionable everywhere, no matter what the phone laws in your state are.

A couple of points.
1) several people stated that the truck driver sped up to keep her out. There is no proof of that. There is proof of a decreasing amount of space between the truck and the vehicles ahead of him.

2) The truck in which the video is being shot from appears to be a semi and not a pickup. You can not expect them to speed up or slow down like a passenger car.

3) The vehicles in front of the truck appear to be slowing down due to conditions in front of them, causing the decreased distance between the truck and traffic in front of him.

4) Even though the audio is not that good, there does not appear to be a change in the engine noise to indicate that the truck driver was speeding up to keep her out.

It appears to me that several vehicles in the slow lane saw that there was a semi in front of them that they wanted to avoid. They saw the space in front of the semi in the high speed lane and decided to occupy it. They then passed on the right hand side of the truck.

*warning legal mumbo jumbo*
Straight from the State of Texas Statutes and Legislation web page
http://www.statutes.legis.state.tx.us/Docs/TN/htm/TN.545.htm

Sec. 545.001. DEFINITIONS. In this chapter:

(1) "Pass" or "passing" used in reference to a vehicle means to overtake and proceed past another vehicle moving in the same direction as the passing vehicle or to attempt that maneuver.
------------------------------------

Sec. 545.057. PASSING TO THE RIGHT. (a) An operator may pass to the right of another vehicle only if conditions permit safely passing to the right and:

(1) the vehicle being passed is making or about to make a left turn; and

(2) the operator is:

(A) on a highway having unobstructed pavement not occupied by parked vehicles and sufficient width for two or more lines of moving vehicles in each direction; or

(B) on a one-way street or on a roadway having traffic restricted to one direction of movement and the roadway is free from obstructions and wide enough for two or more lines of moving vehicles.

She was passing on the right by their definition and she did it illegally The truck being passed did not meet the requirements to legally allow passing on the right.

Seeing the video and having read the appropriate law that applies in this situation, It is my opinion that the driver of the passenger vehicle was at fault.

I don't think her/his lane change was safe at all (bad driver who probably doesn't know better), but also feel the truck driver could have easily avoided the situation but CHOSE to make it an insanely dangerous situation and thus caused the accident when he could have been the better driver (like most of us) and avoided the situation. Both shitty drivers in their own way. Although truck driver knew better and did it anyways. Other driver (i have to assume) is just clueless to the danger they potentially create when making that type of lane change.

Except he wasn't passing a semi, he was in the left lane at the start of the video and driving slowly enough that cars were passing him on the outside.

The car driver is an inconsiderate idiot... agreed, but the truck driver clearly decided that he would rather have an accident than let the car in, so he sped up.

I'm with @newtboy. The truck driver definitely speeds up to block the car when he shouldn't have been in that lane in the first place.

@newtboy,

I think everyone obviously agrees the truck driver could've avoided the accident. Both the truck driver and car driver could've avoided the accident by backing down.

Your point on the truck not 'belonging' in the left hand lane is absurd to me though, as clearly it is passing a vehicle in the slow lane along with everyone else and merely waiting his place in the line currently in the fast lane to make it past. The car(s) passing the truck on the right hand side are just doing that to cut ahead their place in the passing lane.

As for ramming speed as your last comment, the law where I am is the person changing lanes is at fault, period. If you are changing lanes, and the person in the lane is accelerating. The 'ramming' is being done by the driver changing lanes and ramming from the side. Just rewatch from beginning. The truck driver is SLOWING because the blue truck ahead of him is passing more slowly already than our truck driver is going. 1 car squeezes in between the two. The second car gets there as the truck driver is closing the gap. At the time when both the truck and car are beside each other, more than half the car is still in the right hand lane, but the car driver just keeps on coming. As they approach the 23 second mark you can see the car driver ramming the truck to avoid colliding with the right hand truck as the car is still over in that lane as well. You don't get more clear cut than that.

She/ he was unsafe in cutting in. A annoying shitty driver. The truck driver however caused the accident.

Also i assume the truck driver saw her/him as he chose not to slow down when moving off the roadway. You would think he would have broke hard to avoid the situation/accident.

If we all made driving decisions based on principal when other make poor driving decisions many of us would be in hospital or dead by now. People who make choices like this are idiots.

Regardless of the actual rules, they are both crazy.

The truck driver for intentionally taking away the room (see the sudden reduction in space with the car in front between seconds 15 and 19).

And the merging driver for not cancelling her action when she must realize it's not going to work (when she has merged half a lane it must have been clear that whatever was going to happen next, it was going to be problematic).

(she drives a great car though (especially the tires), getting shoved sideways by a truck at high speed but recovering apparently without major difficulty).

I almost bought a parrot owned by a truck driver. It cursed like a sailor! The pet store had to keep in in a separate room because it scared away customers. Funny as hell.

I also heard a parrot that was owned by a widow who recently died. It just cried in an old woman's voice. Cried and cried. Saddest thing I ever heard.

Incredibly, I saw road lines just like this (sometimes worse) in Hawaii last week! We decided the painter was drunk AND fighting with the paint truck driver, sometimes the lines just went zig-zag-scribble, sometimes it looked like the bucket was just tossed into the street, sometimes the lines led right off the road, or into the other lane, it was INSANE! (and hilarious)

Ya the truckers should be driving like 30mph with their flashers on. Even if it is too slow for conditions everyone would slow it up when they do. 40% of accidents in these conditions involving a semi kills someone and rarely is it the truck driver.