Is there any truck to the right of the signal light the traffic sign is with?
Yes, there is a truck to the right of the traffic signal.
    src        edge_attr  dst
0     0   to the left of    3
1     0   to the left of    1
2     0   to the left of    7
3     1  to the right of    4
4     1  to the right of    7
5     1  to the right of    8
6     1  to the right of    0
7     3  to the right of    0
8     3  to the right of    7
9     4  to the right of    8
10    4   to the left of    1
11    7  to the right of    8
12    7  to the right of    0
13    7   to the left of    3
14    7   to the left of    1
15    8   to the left of    7
16    8   to the left of    4
17    8   to the left of    1