Do you see either helmets or motorcycles there?
No, there are no helmets or motorcycles.
    src        edge_attr  dst
0     0  to the right of   15
1     0  to the right of    8
2     2   to the left of   15
3     2   to the left of    4
4     2   to the left of   16
5     2   to the left of   17
6     4  to the right of    2
7     4   to the left of   15
8     5  to the right of    7
9     6  to the right of   10
10    7   to the left of    5
11    7  to the right of   18
12    8   to the left of    0
13    9  to the right of   10
14    9  to the right of   11
15   10   to the left of    9
16   10   to the left of    6
17   11   to the left of    9
18   12  to the right of   14
19   13  to the right of   19
20   13  to the right of   15
21   14   to the left of   12
22   15               on    3
23   15  to the right of   16
24   15   to the left of   19
25   15  to the right of   18
26   15  to the right of    4
27   15   to the left of    0
28   15   to the left of   13
29   15  to the right of    2
30   15  to the right of   17
31   16  to the right of    2
32   16   to the left of   15
33   17   to the left of   15
34   17  to the right of    2
35   18   to the left of   15
36   18   to the left of    7
37   19  to the right of   15
38   19   to the left of   13