Is that a train or a truck?
That is a train.
    src        edge_attr  dst
0     0   to the left of   16
1     0  to the right of    3
2     0   to the left of   22
3     0   to the left of   20
4     1  to the right of    6
..  ...              ...  ...
74   22  to the right of   20
75   22  to the right of    0
76   22   to the left of   16
77   23  to the right of    9
78   23   to the left of   10

[79 rows x 3 columns]