What is the sign that is on top of the sidewalk?
The sign is a stop sign.
     src        edge_attr  dst
0      0      in front of   32
1      0  to the right of   22
2      0  to the right of   21
3      0  to the right of   27
4      0   to the left of   25
..   ...              ...  ...
159   32   to the left of   11
160   32   to the left of   17
161   32           behind    0
162   32   to the left of    0
163   32             near   18

[164 rows x 3 columns]