What is the device to the right of the cars?
The device is a camera.
    src        edge_attr  dst
0     2   to the left of    6
1     2   to the left of   10
2     2  to the right of    5
3     3  to the right of    4
4     4  to the right of   11
5     4   to the left of    8
6     4   to the left of    9
7     4   to the left of    3
8     5   to the left of    2
9     5             near    9
10    6  to the right of    2
11    6   to the left of   10
12    7               on    4
13    8   to the left of    9
14    8  to the right of    4
15    9  to the right of    4
16    9  to the right of    8
17    9             near    5
18   10  to the right of    2
19   10  to the right of    6
20   11   to the left of    4