On which side of the picture are the cars?
The cars are on the right of the image.
    src        edge_attr  dst
0     0   to the left of   14
1     1               on   14
2     1   to the left of    5
3     1  to the right of    4
4     3               on   14
5     3   to the left of    7
6     4               on   14
7     4   to the left of    1
8     4   to the left of    5
9     5               on   14
10    5  to the right of    1
11    5  to the right of    4
12    6  to the right of   14
13    7  to the right of    3
14    7               on   14
15    8  to the right of   12
16    8               on   14
17    9  to the right of   14
18    9   to the left of   18
19   10   to the left of   15
20   10               on   14
21   11  to the right of   14
22   12   to the left of    8
23   12               on   14
24   13               on   14
25   14   to the left of    6
26   14   to the left of   18
27   14  to the right of   20
28   14   to the left of    9
29   14  to the right of    0
30   14   to the left of   11
31   15               on   14
32   15  to the right of   10
33   16               on   14
34   16  to the right of   19
35   18  to the right of   14
36   18  to the right of    9
37   19               on   14
38   19   to the left of   16
39   20   to the left of   14