What is around the train?
The display is around the train.
     src        edge_attr  dst
0      0  to the right of   17
1      0  to the right of   16
2      0  to the right of   25
3      0  to the right of    9
4      0  to the right of    7
..   ...              ...  ...
124   25   to the left of   11
125   25   to the left of   10
126   25  to the right of   17
127   25   to the left of   12
128   25   to the left of    0

[129 rows x 3 columns]