I should add that the SEPTA bus drivers around here are usually amazing at passing me with me being in the lane on the right side and not encroaching much on the opposite lane. One of these spots has no shoulder. I have called a few times to note this to SEPTA so the bus operator gets my thanks.
I think the most important thing to do when near larger vehicles, is be predictable, and if possible stay visible/in their mirror. If you see these vehicles being operated unsafely/illegally definitely stop and call the cops if you can, as there are a lot of overloaded and mechanically unsafe rigs out there being driven without insurance and by people with expired or no licenses.
- Andy