What kind of vehicle is it?
The vehicle is a fire truck.
    src        edge_attr  dst
0     0   to the left of    6
1     0  to the right of    1
2     1   to the left of    0
3     1        parked on    3
4     1   to the left of    6
5     1   to the left of   13
6     2               on    3
7     4   to the left of   13
8     5   to the left of   13
9     6  to the right of    0
10    6  to the right of    1
11   11  to the right of   13
12   13  to the right of    1
13   13  to the right of    4
14   13  to the right of    5
15   13   to the left of   11