What is that sign in front of?
The sign is in front of the bike.
    src        edge_attr  dst
0     0      in front of   25
1     0   to the left of   21
2     0   to the left of   20
3     0   to the left of    8
4     0   to the left of   17
..  ...              ...  ...
63   24   to the left of   10
64   24   to the left of   12
65   25           behind    0
66   25  to the right of    7
67   25   to the left of   11

[68 rows x 3 columns]