Is there any bus?
No, there are no buses.
    src        edge_attr  dst
0     0           behind   11
1     0   to the left of   16
2     0   to the left of   13
3     0   to the left of   17
4     0   to the left of    4
..  ...              ...  ...
62   17  to the right of    0
63   20  to the right of   11
64   21  to the right of    2
65   21  to the right of    7
66   21  to the right of    5

[67 rows x 3 columns]