Are there trains near the sign?
Yes, there is a train near the sign.
    src        edge_attr  dst
0     0  to the right of   12
1     0   to the left of   15
2     0  to the right of    6
3     0  to the right of    1
4     0  to the right of   10
..  ...              ...  ...
60   16   to the left of   12
61   16          next to   11
62   16   to the left of    6
63   16   to the left of   11
64   17   to the left of    8

[65 rows x 3 columns]