I live in a city in Western Canada and drive a pathetic vehicle smaller than a raised dually. I frequently pull up to intersections where you can't turn left until the light changes but I'm turning right (two lanes). It is virtually inevitable that I will need to pull out to see to the left past some giant truck a guy is driving to his office job.

Without fail they all pull forward. Why? They don't need to see past me.

It's either because they can't handle that I'm "winning" or they are deliberately blocking me from being able to see to right safely.

The next thing that happens is the giant truck behind my starts laying on the horn because they want me to go. When I first moved here I thought "it must be clear so they are letting me know". It isn't clear.

This is enough of an issue here that I avoid this situation at all costs. I'll often turn right, left, and right again to do this on a single lane side street (mostly a grid here) rather than turn right at an intersection like this.