Are there any helmets?
No, there are no helmets.
     src        edge_attr  dst
0      0   to the left of    5
1      0   to the left of    4
2      0   to the left of   19
3      0   to the left of   22
4      0   to the left of   23
..   ...              ...  ...
133   32  to the right of   19
134   32  to the right of   17
135   32  to the right of   23
136   32  to the right of   22
137   32  to the right of   24

[138 rows x 3 columns]