Is the open vehicle to the left or to the right of the fence?
The bus is to the left of the fence.
    src        edge_attr  dst
0     0  to the right of   16
1     1  to the right of    4
2     1  to the right of    8
3     1  to the right of    2
4     1  to the right of    9
..  ...              ...  ...
56   19   to the left of   13
57   19   to the left of    2
58   19   to the left of   16
59   19   to the left of   18
60   19   to the left of    9

[61 rows x 3 columns]