Do you see either a yellow train or bus?
No, there is a train but it is red.
    src        edge_attr  dst
0     1   to the left of   10
1     1   to the left of    2
2     2   to the left of   12
3     2  to the right of    1
4     2   to the left of    9
5     2  to the right of   10
6     3           beside    4
7     4               on    0
8     5            below    7
9     8  to the right of   12
10    9  to the right of   12
11    9  to the right of    2
12   10  to the right of    1
13   10   to the left of    2
14   12   to the left of    9
15   12  to the right of    2
16   12   to the left of    8