Which kind of vehicle is on the road?
The vehicle is a truck.
    src        edge_attr  dst
0     0   to the left of   16
1     0   to the left of    4
2     0   to the left of    7
3     0   to the left of    1
4     1  to the right of   16
5     1  to the right of    0
6     1  to the right of    3
7     2   to the left of    5
8     2  to the right of   14
9     3   to the left of    1
10    3   to the left of    4
11    4  to the right of    3
12    4  to the right of   16
13    4   to the left of   11
14    4  to the right of    0
15    5  to the right of    2
16    6      in front of   11
17    6               on   13
18    6  to the right of   10
19    6      taller than   14
20    6  to the right of    9
21    6   to the left of    8
22    6  to the right of   14
23    7  to the right of    0
24    7   to the left of   11
25    7  to the right of   16
26    8  to the right of    6
27    9   to the left of    6
28    9  to the right of   15
29    9   to the left of   11
30   10  to the right of   17
31   10   to the left of   11
32   10  to the right of   15
33   10   to the left of    6
34   10               on   13
35   11           behind    6
36   11  to the right of    4
37   11  to the right of   14
38   11  to the right of    9
39   11  to the right of   10
40   11  to the right of    7
41   14          wearing    9
42   14  to the right of   15
43   14   to the left of    6
44   14   to the left of    2
45   14   to the left of   11
46   15   to the left of    9
47   15   to the left of   14
48   15  to the right of   17
49   15   to the left of   10
50   16   to the left of    7
51   16   to the left of    1
52   16   to the left of    4
53   16  to the right of    0
54   17   to the left of   15
55   17   to the left of   10