Are there either any red fire hydrants or traffic lights?
No, there is a fire hydrant but it is white.
    src        edge_attr  dst
0     0  to the right of   20
1     0  to the right of    7
2     0   to the left of    9
3     0   to the left of   17
4     0   to the left of   13
..  ...              ...  ...
76   20   to the left of   14
77   20   to the left of   15
78   20               on   21
79   21   to the left of   15
80   21   to the left of   12

[81 rows x 3 columns]