Are there trucks in the picture that are yellow?
Yes, there is a truck that is yellow.
     src        edge_attr  dst
0      0  to the right of   21
1      0   to the left of    4
2      0   to the left of    7
3      0  to the right of   17
4      0   to the left of   11
..   ...              ...  ...
142   29  to the right of   24
143   29   to the left of   27
144   30  to the right of   24
145   31  to the right of   24
146   32  to the right of   24

[147 rows x 3 columns]