Do you see trucks or vans there?
Yes, there is a truck.
    src        edge_attr  dst
0     0   to the left of    6
1     0  to the right of   18
2     0   to the left of   10
3     1               on   19
4     1   to the left of    4
..  ...              ...  ...
64   19   to the left of    4
65   19   to the left of    6
66   20  to the right of    8
67   20  to the right of   15
68   20  to the right of    5

[69 rows x 3 columns]