Is there a red stop sign or traffic light?
No, there is a stop sign but it is white.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of    4
2     0  to the right of   11
3     0  to the right of   19
4     0  to the right of    2
..  ...              ...  ...
85   19   to the left of    0
86   20  to the right of    4
87   20   to the left of    3
88   20   to the left of   15
89   20  to the right of    1

[90 rows x 3 columns]