Are there safety jackets or flags?
No, there are no safety jackets or flags.
    src        edge_attr  dst
0     0   to the left of   16
1     0   to the left of    5
2     0   to the left of    4
3     0   to the left of    3
4     1  to the right of   14
5     1  to the right of    2
6     1  to the right of    9
7     2   to the left of    1
8     3  to the right of    0
9     4  to the right of    0
10    4               on    3
11    5  to the right of    0
12    5   to the left of   16
13    6   to the left of   13
14    6   to the left of   10
15    7  to the right of    9
16    7               in   15
17    8  to the right of    9
18    9   to the left of    1
19    9   to the left of   11
20    9   to the left of    7
21    9   to the left of    8
22   10  to the right of    6
23   10  to the right of   12
24   10  to the right of   17
25   11  to the right of    9
26   12   to the left of   10
27   12   to the left of   13
28   13  to the right of   12
29   13  to the right of    6
30   14   to the left of    1
31   16  to the right of    5
32   16  to the right of    0
33   17   to the left of   10