Are there any red traffic lights?
No, there is a traffic light but it is black.
    src        edge_attr  dst
0     1   to the left of   10
1     1   to the left of   13
2     1   to the left of    6
3     2               on   16
4     4               on    1
5     5               on   16
6     5               on    1
7     6  to the right of   16
8     6  to the right of   15
9     6   to the left of   17
10    6  to the right of   11
11    6   to the left of   10
12    6  to the right of    1
13   10  to the right of    1
14   10  to the right of    6
15   10  to the right of   15
16   10  to the right of   11
17   10   to the left of   17
18   10  to the right of   16
19   11   to the left of    6
20   11   to the left of   10
21   12  to the right of   14
22   13  to the right of    1
23   13  to the right of   16
24   14   to the left of   12
25   15   to the left of   10
26   15   to the left of    6
27   15               on   16
28   15               on   12
29   15   to the left of   17
30   16   to the left of   13
31   16   to the left of   10
32   16   to the left of    6
33   17  to the right of    6
34   17  to the right of   10
35   17  to the right of   15