The pedestrians are on what?
The pedestrians are on the bridge.
    src        edge_attr  dst
0     0  to the right of   13
1     0  to the right of   19
2     0   to the left of   14
3     0  to the right of   25
4     0  to the right of   23
..  ...              ...  ...
91   25   to the left of    0
92   25  to the right of   10
93   25   to the left of   13
94   25   to the left of   19
95   25   to the left of   23

[96 rows x 3 columns]