Which side is the lamp of the road on?
The lamp is on the left of the image.
    src        edge_attr  dst
0     0  to the right of   21
1     0  to the right of    7
2     0  to the right of   13
3     0  to the right of    8
4     1  to the right of    7
..  ...              ...  ...
91   21  to the right of    8
92   21  to the right of    5
93   21  to the right of    7
94   21   to the left of    9
95   21   to the left of    1

[96 rows x 3 columns]