Is the bus in the top part of the picture?
Yes, the bus is in the top of the image.
    src        edge_attr  dst
0     0   to the left of   14
1     1  to the right of   15
2     1   to the left of    9
3     1   to the left of   19
4     2   to the left of   15
..  ...              ...  ...
92   19  to the right of    6
93   19  to the right of    1
94   19  to the right of    3
95   19  to the right of   11
96   21               on    3

[97 rows x 3 columns]