Traffic on Flatbush Avenue is about to get a whole lot more snarled. According to a mailer that went out this week from Forest City Ratner, the busy thoroughfare will lose a lane of southbound traffic during morning rush hour for the next year or so while “improvements” are is made on the Atlantic Avenue subway station. Presumably the work is related to connecting the station to the Arena underground. Click on the above image to get a closer look. You can also check out this post on Atlantic Yards Report from last month (where the graphic on the jump is from) for lots more detail on the issue.