Which kind of vehicle is it?
The vehicle is a bus.
    src        edge_attr  dst
0     0  to the right of    4
1     3   to the left of   13
2     4   to the left of   12
3     4   to the left of   13
4     4   to the left of   11
5     4  to the right of   15
6     4   to the left of    0
7     5   to the left of   12
8     5   to the left of   11
9     5   to the left of   13
10    5  to the right of    9
11    7  to the right of    9
12    7   to the left of   12
13    7   to the left of   11
14    7   to the left of   13
15    8   to the left of   13
16    9   to the left of   11
17    9   to the left of    5
18    9   to the left of    7
19   11   to the left of   13
20   11  to the right of    9
21   11  to the right of    7
22   11   to the left of   12
23   11  to the right of    4
24   11  to the right of    5
25   12  to the right of    4
26   12  to the right of    5
27   12  to the right of    7
28   12  to the right of   11
29   13  to the right of    8
30   13  to the right of    5
31   13  to the right of    7
32   13  to the right of    3
33   13  to the right of   11
34   13  to the right of    4
35   15   to the left of    4