Does the truck that is to the left of the traffic signal look silver?
Yes, the truck is silver.
    src        edge_attr  dst
0     1  to the right of    8
1     1  to the right of   11
2     2   to the left of    3
3     2   to the left of    5
4     2   to the left of   17
5     2   to the left of   11
6     2               on    0
7     3  to the right of    4
8     3  to the right of    5
9     3  to the right of    2
10    3               on    1
11    4   to the left of   12
12    4   to the left of    3
13    4           behind    5
14    5   to the left of   17
15    5  to the right of    2
16    5   to the left of    3
17    5   to the left of   12
18    5  to the right of   15
19    5      in front of    4
20    6               on    1
21    6     walking down    1
22    7        on top of    4
23    8   to the left of    1
24    8  to the right of    9
25    8   to the left of   14
26    9   to the left of   15
27    9   to the left of    8
28   11   to the left of    1
29   11  to the right of    2
30   11   to the left of   14
31   12               on    0
32   12  to the right of    5
33   12  to the right of    4
34   14  to the right of   11
35   14  to the right of    8
36   15   to the left of    5
37   15  to the right of    9
38   16        on top of    4
39   17  to the right of    5
40   17  to the right of    2