Do the traffic sign and the van have the same color?
Yes, both the traffic sign and the van are white.
    src        edge_attr  dst
0     0   to the left of    3
1     0   to the left of    1
2     0   to the left of   11
3     0   to the left of    9
4     1  to the right of    0
..  ...              ...  ...
64   18  to the right of   16
65   18   to the left of    7
66   18   to the left of   12
67   18   to the left of    1
68   18   to the left of    8

[69 rows x 3 columns]