Are there either any green traffic lights or surfboards?
Yes, there is a green traffic light.
    src        edge_attr  dst
0     0  to the right of   11
1     0  to the right of   14
2     0   to the left of    3
3     0   to the left of    2
4     1   to the left of    9
5     1   to the left of   13
6     2  to the right of    0
7     3  to the right of   11
8     3  to the right of   14
9     3  to the right of    0
10    5     walking down    6
11    5  to the right of    6
12    5   to the left of    9
13    5   to the left of   13
14    6   to the left of   13
15    6   to the left of    5
16    6     walking down   14
17    6   to the left of    9
18    9  to the right of   12
19    9  to the right of    5
20    9  to the right of    6
21    9  to the right of    1
22   11   to the left of    0
23   11   to the left of    3
24   12   to the left of   13
25   12   to the left of    9
26   13  to the right of    1
27   13  to the right of    6
28   13  to the right of    5
29   13  to the right of   12
30   14   to the left of    3
31   14   to the left of    0