Are there either any red trains or buses?
No, there is a bus but it is white.
    src        edge_attr  dst
0     0             near   21
1     1               by   20
2     1   to the left of   17
3     4  to the right of    5
4     4  to the right of    7
..  ...              ...  ...
66   22  to the right of   23
67   22   to the left of    7
68   22   to the left of    5
69   23   to the left of   22
70   23   to the left of    7

[71 rows x 3 columns]