they literally could forget I’m there their Field of view is so bad

I'm a school bus driver and last year we had an incident where I was behind another bus driver and we were both waiting to turn left at an intersection. While our light was still red, a cyclist rode up on the right and came to a stop right next to the bus ahead of us. I was like "that dude is gonna get hit" and sure enough when the driver ahead of me made her left turn, her tail swing clipped the cyclist and knocked him over. I had tried to warn her but our radios don't work half the time.

The dude was unhurt but irate and after we'd pulled over I had to stand in front of the guy and physically prevent him from climbing on her bus while he yelled. I'm also an avid cyclist and I told him it was entirely his fault for creeping up next to a school bus, which is an even worse thing to do than with most trucks because of how much bus protrudes behind the rear wheels (which causes the tail swing when turning). He of course refused to see this - he cycles around our district a lot and is one of those insane people who thinks bicycling on the wrong side of the road against traffic is a smart thing to do, even around blind turns.