What kind of vehicle is it?
The vehicle is a bus.
     src        edge_attr  dst
0      0             near    9
1      0             near   12
2      0             near    6
3      0             near   16
4      1               on    0
..   ...              ...  ...
98    19   to the left of    9
99    19  to the right of   18
100   19   to the left of   10
101   20   to the left of    5
102   20   to the left of   17

[103 rows x 3 columns]