Monorail Purple on the express beam. This monorail (purple) and Monorail Pink were involved in a very rare fatal crash on July 5th of 2009 that killed the monorail pilot. This train and the other were retired and parts from both of them rebuilt into the new Monorail Teal. Walt Disney World operates the largest monorail system in the United States with over 15 miles of beamway serving it's various resorts as well as the Magic Kingdom and EPCOT. On my visit I spent some time photographing the monorails that drew attention from the "Mouse Police" when I was at the Magic Kingdom. Once they were satisfied I was indeed a transit nut they let me continue on.