Is the color of the bus white?
Yes, the bus is white.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    1
2     1  to the right of   11
3     1  to the right of    0
4     1  to the right of    9
5     2  to the right of    5
6     2   to the left of    6
7     2  to the right of   11
8     3   to the left of   10
9     3  to the right of    5
10    4        on top of   11
11    4   to the left of   12
12    5               on   15
13    5   to the left of    3
14    5   to the left of    6
15    5   to the left of    2
16    5          driving   15
17    6               on   15
18    6  to the right of    5
19    6  to the right of    2
20    7  to the right of   12
21    7  to the right of    0
22    9   to the left of    1
23    9   to the left of   12
24   10  to the right of    3
25   11   to the left of    2
26   11   to the left of    1
27   12   to the left of    7
28   12  to the right of    4
29   12   on the side of   15
30   12  to the right of    9
31   13               on   15
32   14               on    9