Do you see trucks or buses that are not white?
No, there is a bus but it is white.
    src        edge_attr  dst
0     0   to the left of   22
1     2   to the left of   15
2     2  to the right of   18
3     2               by   12
4     2  to the right of   11
..  ...              ...  ...
66   22  to the right of   13
67   22  to the right of   10
68   22  to the right of    3
69   22  to the right of    0
70   22  to the right of    5

[71 rows x 3 columns]