driveway or road?

This lot is tagged as operated by Republic Parking and that it has a fee, suggesting that it's part of the MBTA. From imagery and geometry, one would expect that it's parking for CVS/Crosby's/Dunkin', it's not operated by any parking company, that you can park while shopping without a fee, and that you can't park for the train.
Or perhaps that it has sections which differ.

An on-the-ground survey is needed to read signs and understand the rules, and either fix tagging or close this note as unfounded (if you really have to pay Republic to shop at Crosby's!).

This note is not about the Keolis-operated lot to the south, that is clearly associated with the train station.

See also osm.org/note/4048415 which has discussion leading up to a more concise expression of what needs fixing.

MassGIS says there is a CR. Obtain status from OpenSpace data layer and add a landuse=conservation polygon, boundary=protected_area. If there is a public easement, or similar arrangement, then also leisure=nature_reserve.