Are there any buses on the gray street?
No, there is a car on the street.
    src        edge_attr  dst
0     0   to the left of   10
1     0  to the right of    7
2     1   to the left of   13
3     1   to the left of    7
4     1   to the left of   20
5     1  to the right of   15
6     1   to the left of   22
7     3               in    2
8     4   to the left of   18
9     4  to the right of   15
10    5   to the left of    6
11    5   to the left of    8
12    5   to the left of   12
13    5  to the right of   18
14    6  to the right of   17
15    6  to the right of   18
16    6  to the right of    5
17    6  to the right of    8
18    7  to the right of    1
19    7   to the left of    0
20    7               on   17
21    7   to the left of   21
22    7  to the right of   15
23    8  to the right of   18
24    8   to the left of   12
25    8   to the left of    6
26    8  to the right of    5
27    9               on   10
28   10  to the right of   21
29   10  to the right of    0
30   12  to the right of    8
31   12  to the right of    5
32   13  to the right of    1
33   13   to the left of   20
34   13               on   22
35   15   to the left of    7
36   15   to the left of    4
37   15   to the left of    1
38   17   to the left of    6
39   18  to the right of   19
40   18   to the left of    5
41   18   to the left of    8
42   18               on   17
43   18   to the left of    6
44   18  to the right of    4
45   19   to the left of   18
46   20  to the right of    1
47   20  to the right of   13
48   20               on    4
49   20  to the right of   22
50   21  to the right of    7
51   21               on   17
52   21   to the left of   10
53   22  to the right of    1
54   22   to the left of   20