On which side is the truck?
The truck is on the right of the image.
     src        edge_attr  dst
0      0  to the right of   20
1      0  to the right of   14
2      0  to the right of    6
3      0   to the left of    8
4      0  to the right of   18
..   ...              ...  ...
99    27   to the left of   22
100   27   to the left of   24
101   28               on   27
102   28   to the left of   22
103   29  to the right of   13

[104 rows x 3 columns]