What's the bus coming out of?
The bus is coming out of the tunnel.
    src        edge_attr  dst
0     0    coming out of    5
1     0               in    5
2     0   to the left of    2
3     0  to the right of    7
4     0   to the left of    1
5     0          exiting    5
6     1  to the right of    5
7     1  to the right of    2
8     1  to the right of    0
9     2  to the right of    0
10    2   to the left of    1
11    2  to the right of    5
12    5   to the left of    1
13    5  to the right of    7
14    5   to the left of    2
15    7   to the left of    9
16    7   to the left of    0
17    7   to the left of    5
18    9  to the right of    7