Who wears the vest?
The driver wears a vest.
    src        edge_attr  dst
0     0  to the right of   12
1     0  to the right of   19
2     0               on   10
3     0               at   16
4     0         crossing   16
..  ...              ...  ...
69   19               on   10
70   19  to the right of    3
71   19   to the left of    1
72   19   to the left of    0
73   19  to the right of    2

[74 rows x 3 columns]