I have two mirrors. Though I check the mirrors often, it's impossible to look at them all the time, and I was riding to the far right side of the street, all other vehicles passed me in reasonable distance. I didn't expect the appearance of this bus, as it's very fast. Even if I saw it, I had nowhere to go, since to my right were parked cars. Really, if I had leaned just a tiny bit to the left while it's passing, I might not be posting here today. The bus looked like the one in the following picture, but I didn't get any numbers on it:
Ah, yes. There is a bus locally like that. Which goes from one local metro transit station(13mi. outside the center of Washington, DC). To BWI-Thurgood Marshall Airport, in Baltimore. It is run by the state transportation association. Greyhound, Trailways, Peter Pan, etc., use that kind of bus. Charter companies also use that kind of bus.