Where is the traffic signal?
The traffic signal is in the street.
     src        edge_attr  dst
0      0   to the left of   16
1      0  to the right of   23
2      0   to the left of   19
3      0   to the left of   26
4      0   to the left of   24
..   ...              ...  ...
221   41  to the right of   30
222   42  to the right of   25
223   42  to the right of   28
224   42  to the right of   30
225   42  to the right of   41

[226 rows x 3 columns]