Are there both traffic lights and cars in this picture?
No, there is a traffic light but no cars.
    src        edge_attr  dst
0     1  to the right of    4
1     1  to the right of   11
2     1  to the right of   17
3     2   to the left of    8
4     3  to the right of   17
5     3   to the left of   18
6     3   to the left of    8
7     3   to the left of   15
8     3   to the left of    9
9     4   to the left of   18
10    4             near   13
11    4   to the left of    7
12    4   to the left of    1
13    5  to the right of    9
14    5  to the right of   18
15    5  to the right of   15
16    6  to the right of    9
17    6  to the right of    8
18    7  to the right of   13
19    7  to the right of   10
20    7  to the right of   12
21    7  to the right of    4
22    7  to the right of   17
23    8  to the right of    2
24    8  to the right of    9
25    8  to the right of    3
26    8   to the left of    6
27    9   to the left of    5
28    9  to the right of    3
29    9   to the left of    8
30    9   to the left of    6
31    9   to the left of   18
32    9   to the left of   15
33   10   to the left of    7
34   11   to the left of    1
35   12   to the left of    7
36   12  to the right of   16
37   13   to the left of    7
38   13          next to    4
39   15  to the right of    3
40   15   to the left of    5
41   15  to the right of    9
42   15  to the right of   18
43   16   to the left of   12
44   17   to the left of    3
45   17   to the left of    1
46   17   to the left of    7
47   18   to the left of   15
48   18  to the right of    9
49   18  to the right of    4
50   18   to the left of    5
51   18  to the right of    3