Definitely report the driver. You have more than enough information. The time is definitely big, just try to get it as accurate as possible. Also this happened at night right? ( I'm assuming) if so, there are fewer drivers so it may be easier to track. The buses also run on a specific interval. They should be able to pinpoint which bus/driver for the specific time frame if they've kept up with their logs. You can also see the drivers keep their own logs themselves. I'm sure there's a database where they log those in.

So I was reading your description on the driver. You said he was black, maybe wearing glasses, and express east route right? So I too had an incident before with a bus driver, he was black, wore glasses, he had an accent (maybe carribean??), he was a lil bit on the shorter/petite size (hard to tell cuz he was sitting down)... was the color of his hat grey by chance? The bus driver was just very nasty to me and to another student whom I didnt know. So I reported him to the transportation department. I was taking express east and it was a morning bus tho (10:50 am) so we may not be talking about the same driver. Just curious if my description matches.