Are there both a traffic light and a stop sign in the photo?
Yes, there are both a stop sign and a traffic light.
    src        edge_attr  dst
0     0   to the left of    9
1     1               on    8
2     2   to the left of    6
3     2   to the left of   17
4     2  to the right of   14
5     3  to the right of   14
6     4  to the right of   15
7     5  to the right of   15
8     6  to the right of   18
9     6  to the right of    2
10    6   to the left of   11
11    7   to the left of    9
12    8               on    9
13    8   to the left of    9
14    9  to the right of    0
15    9  to the right of   16
16    9  to the right of    7
17    9  to the right of   12
18    9  to the right of    8
19   10  to the right of   14
20   11  to the right of    6
21   12   to the left of    9
22   14               by    9
23   14   to the left of   18
24   14   to the left of   10
25   14   to the left of    3
26   14   to the left of    2
27   15   to the left of    5
28   15   to the left of    4
29   16   to the left of    9
30   17  to the right of    2
31   18  to the right of   14
32   18   to the left of    6