What is the driver driving?
The driver is driving a carriage.
    src        edge_attr  dst
0     0   on the side of    5
1     0   to the left of    2
2     1  to the right of    8
3     1               in   18
4     1          holding   17
..  ...              ...  ...
67   18        pulled by   16
68   18   to the left of   10
69   18   to the left of   12
70   18   to the left of   16
71   18          holding    7

[72 rows x 3 columns]