What is the picture showing?
It is showing a road.
    src        edge_attr  dst
0     1   to the left of   17
1     1   to the left of    8
2     2   to the left of   15
3     2  to the right of   12
4     2  to the right of   13
..  ...              ...  ...
79   21   to the left of    5
80   21   to the left of    4
81   22  to the right of    5
82   22  to the right of    4
83   22  to the right of    2

[84 rows x 3 columns]