Where are the pedestrians?
The pedestrians are on the side walk.
    src        edge_attr  dst
0     0   to the left of   15
1     0   to the left of   10
2     1  to the right of    3
3     1   to the left of   10
4     1   to the left of   15
..  ...              ...  ...
84   17   to the left of   10
85   17   to the left of   15
86   17  to the right of    2
87   19   to the left of   10
88   19   to the left of   15

[89 rows x 3 columns]