So who's more wrong?

Could have been and likely will be.

Seems the red truck was heavier and was slow due to a hill. White truck caught up quick and attempted to pass just at the end of a passing lane as the road levelled out and red truck was getting speed back.

The thing that gets me (besides the idiotic, unprofessional actions of both) is that the dude with the dash cam thought it a good idea to post his/her dangerous behavior on social media.

Now both are going to be schooled it seems.

“This was a very serious near-miss situation. We will be conducting a full safety review ASAP. Our entire fleet is equipped with Satellite tracking units and dash cams; which will assist in our investigation,” said Chambers Transportation Group president Ryan Chambers in a statment.

“The type of driving behaviour shown in the video is unacceptable and we will take immediate action.”

The Ministry of Transportation and Infrastructure said that when they receive information regarding dangerous driving and commercial vehicles, the information is shared with the ministry’s Commercial Vehicle Safety and Enforcement (CVSE) branch.

“CVSE will prioritize verification of both vehicles and drivers and will follow up to determine appropriate action.”

Semi-truck makes dangerous pass on B.C. highway | Globalnews.ca

 

No. As you said, they're both morons. So who's the bigger moron.

Personally I think it's a tie.

Whoever posted the video did a good job of making it look like the white truck was passing on a double yellow but the pass was on a passing lane and had the red truck eased up on the fuel a bit instead of regaining the speed lost climbing the hill as quick as possible (I'm guessing they don't pay for the fuel) the pass likely would have been completed before the passing lane ran out. Not only did they choose to start the video at the point that it wasn't obvious there was a passing lane it was also at a point after they crested the hill and were likely going a good bit slower just seconds earlier.

While I agree with everyone who says it's an AH move to increase speed like that when being passed it's just as bad to run someone at the end of the passing lane like that. Either way both should have easily recognized they were going to be in a position where both wanted the same real estate at the same time and avoided that. Pure amateur hour.

Once they ended up in that situation it goes from amateur hour to reckless insanity on the part of both IMO. Engine on, brain off.

If it were up to me both would lose their driving privileges for at least a year and neither would ever drive a commercial vehicle again.

Of course that won't happen but I hope they're at least required to complete a thorough defensive driving program.