Are there red buses or trains?
No, there is a bus but it is yellow.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    2
2     2   to the left of    7
3     2   to the left of    9
4     2   to the left of   11
5     2   to the left of   13
6     2   to the left of    8
7     2   to the left of    6
8     2   to the left of    0
9     2   to the left of    4
10    2               on    5
11    4  to the right of    2
12    6               of   11
13    6  to the right of    2
14    7  to the right of    2
15    8   to the left of    0
16    8  to the right of    2
17    9   to the left of   14
18    9  to the right of    2
19   11  to the right of    2
20   13   to the left of   14
21   13  to the right of    2
22   14               of   11
23   14  to the right of    9
24   14  to the right of   13