What is that train on?
The train is on the tracks.
    src        edge_attr  dst
0     0   to the left of   20
1     0  to the right of    8
2     0   to the left of   16
3     0   to the left of   17
4     1  to the right of   20
..  ...              ...  ...
60   20  to the right of   19
61   20            below   15
62   20   to the left of    1
63   20  to the right of    0
64   20               on   14

[65 rows x 3 columns]