This is just called "inbound" and "outbound" for Boston. It is a bit confusing because there is two stops in the city that are as far in as you can go so you c

This is just called "inbound" and "outbound" for Boston. It is a bit confusing because there is two stops in the city that are as far in as you can go so you can't label the directions this way from there, and you the definition of in and out flips after you pass there.