What vehicle is to the left of the white lamp?
The vehicle is a bus.
     src        edge_attr  dst
0      0   to the left of   15
1      0   to the left of    6
2      1  to the right of   15
3      2   to the left of   24
4      2   to the left of    9
..   ...              ...  ...
129   25   to the left of    9
130   26  to the right of   12
131   27   to the left of   14
132   27   to the left of   21
133   27  to the right of   12

[134 rows x 3 columns]