How can I roll over my tractor trailer?

This questions sounds like 1 of those that veterans with years and years of experience will be able to answer, so I post it here!

The reason I ask this question is because, the most serious, highway traffic crippling accidents almost always involve a roll over.

If I know HOW can I roll over my set, then I'll know what I should never do in emergency situations to avoid the worst, like if it means I am going to kill 1 of those ####### suicidal 4 wheeler, so be it.

 

I have been trucking and making a living off of a truck for 10 years in Canada, so although I only have 1 year safe driving on a rig I personally think I am doing reasonably well compare to others with 1 year experience.

What bother me is something like this, happened this Monday, the weather condition was perfect so no rain no snow:

A semi hauling a 53" flip over on a stretch of Hwy 401 near Toronto, the road was straight with 5 lanes of traffic going 1 direction...

It involved a 4 wheeler of course! But how did the trucker do it? How can someone flip over under such circumstances? If I know how he did it then I will know what not to do to prevent it!

 

That night, 4 out of 5 lanes on that major route was closed, massive traffic jam. And we were discussing on the CB and wondering how did the guy do it...

It was inconclusive so I just want to keep this discussion going and wondering if the experienced veterans on this forum can chip in and teach me a few things! Thanks!