Are there any traffic signs in this picture that are blue?
No, there is a traffic sign but it is white.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of    5
2     0   to the left of   15
3     1  to the right of   11
4     1  to the right of    8
5     2  to the right of    5
6     3               on    4
7     5   to the left of    2
8     5  to the right of    0
9     6  to the right of   11
10    6   to the left of   18
11    6  to the right of    0
12    6  to the right of    8
13    7   to the left of   16
14    7  to the right of   12
15    8   to the left of    6
16    8   to the left of    1
17    9               on   13
18    9   to the left of   10
19   10               on    4
20   10  to the right of    9
21   10   to the left of   16
22   10  to the right of   12
23   11               on   13
24   11   to the left of    6
25   11   to the left of    1
26   11   to the left of   15
27   12   to the left of    7
28   12   to the left of   16
29   12   to the left of   10
30   12   to the left of   17
31   14   to the left of   18
32   15  to the right of   11
33   15  to the right of    0
34   16  to the right of    7
35   16  to the right of   12
36   16  to the right of   17
37   16  to the right of   10
38   17   to the left of   16
39   17  to the right of   12
40   18  to the right of    6
41   18  to the right of   14