What vehicles are on the street?
The vehicles are buses.
    src        edge_attr  dst
0     0   to the left of   11
1     1   to the left of    4
2     1  to the right of    3
3     1   to the left of   15
4     1   to the left of   16
..  ...              ...  ...
60   16  to the right of    7
61   16  to the right of   10
62   16  to the right of    9
63   16  to the right of    4
64   16  to the right of    3

[65 rows x 3 columns]