What is common to the traffic sign and the truck?
The color, both the traffic sign and the truck are white.
    src        edge_attr  dst
0     0  to the right of    4
1     0   to the left of    6
2     0   to the left of    7
3     1  to the right of    7
4     2   to the left of    6
5     2   to the left of    7
6     4   to the left of    0
7     6  to the right of    0
8     6  to the right of    2
9     6  to the right of    7
10    6   on the side of    3
11    7   to the left of    1
12    7  to the right of    2
13    7  to the right of    0
14    7   to the left of    6
15    9               on    3
16    9  to the right of   10
17   10   to the left of    9