Does the train appear to be driving or waiting?
The train is driving.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of    7
2     0   to the left of    6
3     0           beside    6
4     0             near    4
5     1            above    7
6     3            below    6
7     3           beside    6
8     4  to the right of    0
9     4   to the left of    7
10    4             near    0
11    5            below    6
12    5  to the right of    7
13    6            above    5
14    6            above    3
15    6  to the right of    0
16    7  to the right of    0
17    7   to the left of    5
18    7               on    6
19    7  to the right of    4