What is the sign on?
The sign is on the post.
     src        edge_attr  dst
0      0   to the left of   30
1      0  to the right of   28
2      0  to the right of   14
3      0  to the right of   18
4      0   to the left of   15
..   ...              ...  ...
122   30  to the right of    0
123   30  to the right of   28
124   30  to the right of   18
125   30  to the right of   17
126   30  to the right of   16

[127 rows x 3 columns]