Is this a truck or a bus?
This is a bus.
    src        edge_attr  dst
0     0   to the left of    3
1     0           behind   17
2     1   to the left of    8
3     2  on the front of    3
4     3  to the right of    0
5     3  to the right of   17
6     3  to the right of    8
7     4  to the right of   13
8     4   to the left of    8
9     4  to the right of   14
10    5               on   16
11    6  to the right of   11
12    6  to the right of   15
13    6  to the right of    9
14    8  to the right of   15
15    8  to the right of   13
16    8  to the right of    4
17    8   to the left of    3
18    8  to the right of    1
19    8  to the right of   11
20    8  to the right of   14
21    8   to the left of   16
22    9               by    1
23    9   to the left of    6
24   11   to the left of    8
25   11   to the left of    6
26   11               on   14
27   13   to the left of    8
28   13   to the left of    4
29   14   to the left of    4
30   14   to the left of    8
31   15   to the left of    6
32   15   to the left of    8
33   16  to the right of    8
34   17   to the left of    3