I posted the videos to YouTube in a way that you would have to have the link to view. I let the bus groups know this so they knew that I was giving them a chance to handle it without any other agenda on my part.
Companies with fleets want to control their risks and so are likely to respond when they have something that validates a claim. Without validation, I would think they would still talk to the driver but would then get tied up with the "two different versions" dilemma.
I don't have that many negative interactions with traffic. In the cases above, I reported the drivers because of behaviour that was more likely to affect the safety of their passengers.