What are the wires hanging over?
The wires are hanging over the road.
    src        edge_attr  dst
0     5  to the right of   12
1     5  to the right of    7
2     7   to the left of    5
3     7  to the right of   12
4     8   to the left of    9
5     9  to the right of    8
6    11     hanging over    2
7    12   to the left of    7
8    12   to the left of    5
9    13    growing along   14
10   15               in    0
11   15           behind    2