Driving up and down the 30 mile section of I94 south of Port Huron, I often encounter semi-trucks with Ontario plates. And, I have to say, Ontario truck drivers are some of the most rude drivers I’ve dealt with.
Today, I had a truck decide to switch from the right to left lane, right in front of me with little to no warning. About 2 cars lengths behind him, preparing to pass him doing about 10MPH over his speed, he suddenly just hit the left turn signal and started coming over, causing me to slam on my brakes to stop from hitting him. A car (no tow truck, no police) was on the right shoulder with his flashers on, so the truck decided to switch lanes, RIGHT NOW. No concern for other traffic, I doubt he even looked.
After I passed him, I watched another truck do exactly the same thing to another car, causing the car to noticeably slam on their brakes also.
About 3-4 years ago, I had a semi do the same thing to me, but I was just starting to pass the semi. He slammed side of his truck into my truck, pushed me off the road, and tore the side of my truck up. The officer ticketed him for an improper lane change.
Ontario drivers are noticeably ruder the the majority of the cars you see (driving 85+, severe lane changes, general rude behavior) but the trucks are the worse of the bunch. I wonder if they are as bad in their own country, or just decide that they can drive like a-holes when in the US.