Is the road smooth or rough?
The road is rough.
    src        edge_attr  dst
0     1  to the right of   23
1     1  to the right of   21
2     2   to the left of   18
3     2   to the left of   13
4     2   to the left of    9
5     3  to the right of   15
6     6  to the right of   21
7     6  to the right of   23
8     7  to the right of    8
9     7  to the right of   12
10    7   to the left of   11
11    8   to the left of   11
12    8   to the left of    7
13    8  to the right of   12
14    9  to the right of   18
15    9   to the left of   16
16    9  to the right of    2
17   10  to the right of   20
18   11   to the left of   21
19   11  to the right of    7
20   11  to the right of    8
21   12   to the left of   18
22   12   to the left of    7
23   12   to the left of    8
24   13  to the right of    2
25   13   to the left of   15
26   14  to the right of   15
27   15   to the left of    3
28   15  to the right of   13
29   15   to the left of   14
30   16  to the right of    9
31   16  to the right of   18
32   17  to the right of   23
33   17  to the right of   21
34   18  to the right of   12
35   18   to the left of    9
36   18  to the right of    2
37   18   to the left of   16
38   19  to the right of   20
39   20   to the left of   10
40   20   to the left of   19
41   21           inside   23
42   21  to the right of   11
43   21   to the left of   17
44   21   to the left of    1
45   21   to the left of    6
46   23   to the left of    1
47   23   to the left of    6
48   23   to the left of   17