On which side is the traffic signal?
The traffic signal is on the right of the image.
    src        edge_attr  dst
0     0  to the right of    9
1     0            above   15
2     1  to the right of   13
3     1  to the right of    6
4     1  to the right of    9
..  ...              ...  ...
74   17  to the right of    2
75   18  to the right of    9
76   19  to the right of    5
77   19  to the right of   10
78   19  to the right of    9

[79 rows x 3 columns]