Is the vehicle driving or waiting?
The vehicle is driving.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of    9
2     0   to the left of    2
3     0  to the right of    3
4     0  to the right of    5
..  ...              ...  ...
56   15   to the left of    3
57   15   to the left of   13
58   15               by   16
59   16   to the left of    9
60   16   to the left of    2

[61 rows x 3 columns]