Are there any helmets or fences?
No, there are no fences or helmets.
    src        edge_attr  dst
0     0   to the left of   15
1     0   to the left of    6
2     1   to the left of   15
3     2  to the right of   13
4     2  to the right of   16
5     2  to the right of   11
6     2  to the right of    8
7     3  to the right of    8
8     3  to the right of   11
9     3  to the right of   10
10    5   to the left of   15
11    5   to the left of    6
12    6  to the right of    9
13    6  to the right of    8
14    6  to the right of    0
15    6  to the right of    5
16    6  to the right of   10
17    6               on    7
18    8   to the left of    6
19    8   to the left of    3
20    8   to the left of    2
21    8   to the left of   15
22    9   to the left of   15
23    9   to the left of    6
24   10        riding on    9
25   10   to the left of   15
26   10   to the left of    3
27   10   to the left of    6
28   11   to the left of    2
29   11   to the left of    3
30   13  to the right of   16
31   13               of   11
32   13   to the left of    2
33   14   to the left of   15
34   15  to the right of   17
35   15  to the right of    9
36   15  to the right of   10
37   15  to the right of    0
38   15  to the right of    1
39   15  to the right of    8
40   15  to the right of   14
41   15  to the right of    5
42   16   to the left of   13
43   16   to the left of    2
44   17   to the left of   15