Which kind of vehicle is on the street?
The vehicle is a bus.
    src        edge_attr  dst
0     0  to the right of    3
1     0               on    1
2     0  to the right of   11
3     1  to the right of   11
4     1  to the right of    3
5     2   to the left of    6
6     2  to the right of   10
7     3   to the left of    1
8     3   to the left of    4
9     3             near   10
10    3  to the right of    8
11    3  to the right of    5
12    3  to the right of   14
13    3  to the right of   10
14    3   to the left of    0
15    3               on    9
16    3   to the left of   12
17    4  to the right of    3
18    4  to the right of   15
19    5  to the right of   14
20    5   to the left of    3
21    5   to the left of   11
22    6  to the right of    2
23    7  to the right of   13
24    7  to the right of   11
25    8   to the left of    3
26    8  to the right of   14
27    9  to the right of   10
28   10   to the left of    2
29   10   to the left of    3
30   10   to the left of    9
31   10          next to    3
32   11   to the left of    0
33   11   to the left of   15
34   11  to the right of   14
35   11   to the left of   12
36   11   to the left of    7
37   11   to the left of    1
38   11  to the right of    5
39   12  to the right of   13
40   12  to the right of   11
41   12  to the right of    3
42   13           inside    3
43   13   to the left of    7
44   13   to the left of   15
45   13   to the left of   12
46   14   to the left of    5
47   14   to the left of    3
48   14   to the left of    8
49   14   to the left of   11
50   15   to the left of    4
51   15  to the right of   11
52   15  to the right of   13