What vehicles are parked?
The vehicles are buses.
     src        edge_attr  dst
0      1   to the left of   11
1      1   to the left of    9
2      1  to the right of    8
3      1  to the right of   28
4      1   to the left of   10
..   ...              ...  ...
213   36   to the left of   21
214   36   to the left of   22
215   36   to the left of   11
216   36  to the right of   18
217   36  to the right of   19

[218 rows x 3 columns]