Is this guy to the right of trains?
No, the guy is to the right of the trucks.
    src        edge_attr  dst
0     0        parked in    9
1     0   to the left of    6
2     0   to the left of   10
3     0   to the left of   14
4     0   to the left of    5
..  ...              ...  ...
74   14   to the left of   10
75   14   to the left of    5
76   14  to the right of    0
77   14   to the left of    6
78   15   to the left of    8

[79 rows x 3 columns]