What is that vehicle called?
This is a bus.
    src        edge_attr  dst
0     0   to the left of   13
1     0   to the left of    5
2     0  to the right of    3
3     0  to the right of   11
4     0  to the right of    1
..  ...              ...  ...
62   18   to the left of   14
63   19  to the right of    8
64   19   to the left of   16
65   19  to the right of   12
66   19  to the right of   17

[67 rows x 3 columns]