Do you see any truck on the road?
No, there is a carriage on the road.
     src        edge_attr  dst
0      0  to the right of    7
1      0  to the right of    1
2      0  to the right of   11
3      0  to the right of   10
4      1  to the right of   12
..   ...              ...  ...
134   23  to the right of   10
135   24   to the left of   11
136   24  to the right of   25
137   24   to the left of    7
138   25   to the left of   24

[139 rows x 3 columns]