What kind of vehicle is it?
The vehicle is a bus.
    src        edge_attr  dst
0     1   to the left of   11
1     1   to the left of    7
2     2   to the left of    7
3     2   to the left of   16
4     2  to the right of   12
..  ...              ...  ...
83   21        on top of   15
84   21  to the right of   16
85   21  to the right of    8
86   21   to the left of   10
87   22             near   16

[88 rows x 3 columns]