Are there either blue fire hydrants or parking signs?
No, there is a fire hydrant but it is white.
    src        edge_attr  dst
0     0  to the right of   15
1     0   to the left of    3
2     0  to the right of    6
3     1  to the right of   16
4     2  to the right of   15
..  ...              ...  ...
60   15   to the left of    2
61   15           beside    8
62   15   to the left of   13
63   16   to the left of    1
64   16   to the left of    8

[65 rows x 3 columns]