What is the vehicle that is going down the road?
The vehicle is a car.
    src        edge_attr  dst
0     0   to the left of    3
1     0   to the left of    7
2     1  to the right of    6
3     1  to the right of    7
4     1   to the left of   16
..  ...              ...  ...
73   17       going down    4
74   18   to the left of    5
75   18       going down    4
76   18  to the right of   17
77   18   to the left of    7

[78 rows x 3 columns]