Originally Posted by
transportprof
A poster upthread suggested allowing 20 minutes to transfer from MARC's BWI station to the airport terminal. Would this 20 minute transfer also apply to Amtrak?
Yes, the transfer time applies regardless of how you get to the station— drive, bus, bike, MARC, or Amtrak.
The shuttle bus is free, independently operated from the trains, and not coordinated with any train or bus schedules. It is, after all, a shuttle.