Is the color of the truck different than the van?
No, both the truck and the van are white.
    src        edge_attr  dst
0     0   to the left of    2
1     0  to the right of   11
2     0   to the left of    6
3     0   to the left of    5
4     0   to the left of    9
5     0  to the right of    7
6     0  to the right of   14
7     0   to the left of   13
8     1  to the right of   11
9     1   to the left of    9
10    1   to the left of    6
11    1   to the left of    3
12    1  to the right of   14
13    1   to the left of    5
14    1   to the left of    2
15    1   to the left of   13
16    2  to the right of    0
17    2  to the right of   12
18    2  to the right of    1
19    2   to the left of    9
20    3  to the right of   12
21    3  to the right of    1
22    3  to the right of    8
23    3   to the left of    9
24    5  to the right of    0
25    5  to the right of    1
26    6   to the left of   13
27    6  to the right of    1
28    6  to the right of    0
29    7   to the left of   12
30    7   to the left of    0
31    8   to the left of    3
32    8  to the right of   12
33    9  to the right of    2
34    9  to the right of    0
35    9  to the right of    3
36    9  to the right of    1
37   11   to the left of    1
38   11   to the left of    0
39   12   to the left of    8
40   12  to the right of    7
41   12   to the left of    2
42   12   to the left of    3
43   13  to the right of    1
44   13  to the right of    6
45   13  to the right of    0
46   14   to the left of    0
47   14   to the left of    1