Steven Stites with BostonNOW has written an article about the harassment photographers face on the MBTA
Here's a scan of the printed copy.
The web version (with one of my panoramas, no less).
Stites did a great job writing the article but his editors apparently mashed it, like a pot of overcooked pasta, into something less intelligible than Steven's original. Thankfully, the web version does not have this problem.
Suffice it to say that the MBTA draft policy does, indeed, permit photography with some minor caveats.
So big thanks to BostonNOW -- and Steven Stites in particular -- for taking the time to address this issue.
Now we just need to get the MBTA to actually tell their employees that photography is allowed...