Is the traffic signal in the top part of the photo?
Yes, the traffic signal is in the top of the image.
    src        edge_attr  dst
0     0  to the right of    2
1     0  to the right of    1
2     1  to the right of    2
3     1   to the left of    0
4     2   to the left of    1
5     2   to the left of    0
6     4       driving on    3
7     5  to the right of    8
8     5       driving on    3
9     5  to the right of    7
10    6       driving on    3
11    7       driving on    3
12    7   to the left of    5
13    8       driving on    3
14    8   to the left of    5
15    9  to the right of   10
16   10   to the left of    9
17   10  to the right of   11
18   11   to the left of   10