What place could this be?
It is a pavement.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    1
2     0  to the right of   15
3     1  to the right of    2
4     1  to the right of    3
..  ...              ...  ...
76   18   to the left of    7
77   18       walking on   11
78   20   to the left of    1
79   20  to the right of   18
80   20   to the left of   15

[81 rows x 3 columns]