What kind of vehicle is it?
The vehicle is a train car.
    src        edge_attr  dst
0     0   to the left of    2
1     1   to the left of    2
2     2   to the left of   12
3     2  to the right of    1
4     2  to the right of    0
..  ...              ...  ...
94   28   to the left of   10
95   28  to the right of   21
96   28  to the right of   19
97   30   to the left of   12
98   30   to the left of    9

[99 rows x 3 columns]