Which side are the cars on?
The cars are on the left of the image.
     src        edge_attr  dst
0      0   to the left of   34
1      0  to the right of   35
2      0  to the right of    9
3      0  to the right of    7
4      0   to the left of   33
..   ...              ...  ...
172   35   to the left of    7
173   35   to the left of    0
174   35   to the left of   17
175   35   to the left of   32
176   35   to the left of   29

[177 rows x 3 columns]