thans for your quick answer.
well I didn't read the instructions very well, and mistakenly assumed that something like that was possible

       ------ 
      /
     /

this will leave room for ambiguity if for example we add a '+'

     +-----
     /
    /

maybe giving more examples will make the task easier, as it will give more hints on
how to solve its up to you to decide .

Hi, love your katas they are always a nice challenge and satisfying when completed.

I am still working on that one, and i have a problem with the accepted input for the track sequence.

in your examples you state that

   |                 \   /
   |                  \ / 
---+----     and       X
   |                  / \
   |                 /   \

is how crossings are layed on the track
in the example track i see

            /
           /
          / 
    -----+------
         |
         |

a bit unexpected, should i change my code to take care of this, or is it just a slight mistake in the example track ?