Do the large vehicles look blue or white?
The buses are blue.
    src        edge_attr  dst
0     1  to the right of   14
1     1   to the left of    2
2     2     traveling on   10
3     2   to the left of   12
4     2  to the right of    3
5     2  to the right of   14
6     2  to the right of    8
7     2  to the right of    1
8     3  to the right of   14
9     3          next to   14
10    3             near   14
11    3   to the left of    2
12    4  to the right of    5
13    5   to the left of    4
14    7            below    9
15    8  to the right of   14
16    8   to the left of    2
17   12  to the right of    2
18   14   to the left of    3
19   14   to the left of    2
20   14   to the left of    1
21   14   to the left of    8
22   14             near    3