What's the number on?
The number is on the bike.
    src        edge_attr  dst
0     0  to the right of    8
1     1             near    7
2     3               on    4
3     4  to the right of   11
4     5               on    4
5     5  to the right of   11
6     5  to the right of    6
7     6   to the left of   10
8     6             near    7
9     6             near    9
10    6   to the left of    5
11    7             near    9
12    7             near    6
13    7             near    1
14    7             near   12
15    8               on    4
16    8   to the left of    0
17    9             near    7
18    9             near    6
19   10  to the right of    6
20   10  to the right of   11
21   11   to the left of   10
22   11   to the left of    5
23   11   to the left of    4
24   12             near    7