SIMPLE FREIGHT YARD AT BATH/AVON/CUBA INTERCHANGE
 =================================================

               main line (east-bound)
 TO  <----------------------------------------------------------------------------------<  TO
AVON     \     main line (west-bound)                                             \   /   BATH
     >----\------------------------------------------------------------------------\---->
team track \   arrival/departure line 1               /      engine services    \   \
|-----------------------o------------------------o---/-----------------------|   \   \
                     \  a/d 2 (and run-around)      /    \  repairs-in-place      \   \ main
                      --------------------------o---      \---------------|   main \   \ line
                 classification track 1                    \  \                line \   \ (east)
             |-------------------------------------------o--\  \  yard        (west) \   \ _
        yard     classification track 2                      \  \  run-              _\| |\
        body |---------------------------------------------o--\  \  around
                 classification track 3                        \  \                   TO CUBA
             |-----------------------------------------------o--\  \
                                                                 \  \
                                                                  \  \
                                                                   \  \
                                                                    \ |
                                                                     \|
              LEGEND                                                  \
                                                                       \
               track label                                              \
              -------------                                              \
                                                                          \
              --o-- decoupler                                              \ yard
                                                                            \ lead
                                                                             \
                                                                              \
                                                                               \
                                                                                \
                                                                                 \
                                                                                  \
                                                                                   \/
                                                                                   /

 FREIGHT YARD IN CORNER OF ROOM

                                                                             RIP lead
                                                             |------------------------------|
                                                            RIP/   /  classification track 1
                                                              /   /---o---------------------|
                                                             /   /    classification track 2
                                                           _/_  /---o-----------------------|
                                                               /      classification track 3
                                                              /---o-------------------------|
                                           run-around        /    run-around      team track
                                         -------------------/---------------o------o--------|
                       yard lead        /                  / arrival/departure  \ eng. serv.
                  |---------------------------------------/---o--------------o---\----------|
                                     main line east      /                        \
  TO  <-------------------------------------------------/---------------------------
 AVON           /                    main line west    /                            \
      >--------/-----------------------------------------------------------------   |\
              /   /                                                              \  | \
             /   /                                                                \ |  \
            /   /                                                                  \|   \
           /   /                                                                    \    \
          /  _/                                                                      |    |
        |/_  /|                                                                     \|/  /|\
        TO BATH                                                                     TO CUBA


REFERENCES
  http://www.ppdnmra.com/tips/yard_design.htm
  http://users.iafrica.com/c/ca/caroper/tutorial/