Are there stop signs or cars that are red?
Yes, the stop sign is red.
    src        edge_attr  dst
0     0               on    2
1     0  to the right of    9
2     0   to the left of    2
3     0  to the right of    4
4     1   to the left of   13
5     2  to the right of    0
6     2  to the right of   13
7     2  to the right of    9
8     2  to the right of   14
9     2  to the right of   10
10    3  to the right of    6
11    3  to the right of   10
12    3  to the right of    9
13    4   to the left of    0
14    4  to the right of   12
15    4  to the right of   11
16    4   to the left of   14
17    5  to the right of    6
18    5  to the right of   11
19    5  to the right of   12
20    6   to the left of    3
21    6   to the left of    9
22    6   to the left of    5
23    6   to the left of   14
24    6   to the left of   10
25    7   to the left of   13
26    8   to the left of   13
27    9  to the right of   11
28    9   to the left of   14
29    9   to the left of    0
30    9   to the left of    2
31    9  to the right of    6
32    9  to the right of   12
33    9   to the left of    3
34   10   to the left of   14
35   10  to the right of   11
36   10  to the right of   12
37   10  to the right of    6
38   10   to the left of    2
39   10   to the left of    3
40   11   to the left of   10
41   11   to the left of    4
42   11   to the left of    5
43   11   to the left of    9
44   12   to the left of    9
45   12   to the left of    5
46   12   to the left of   10
47   12   to the left of    4
48   13  to the right of    1
49   13  to the right of    7
50   13   to the left of    2
51   13  to the right of    8
52   14   to the left of    2
53   14  to the right of   10
54   14  to the right of    4
55   14  to the right of    6
56   14  to the right of    9