What do you think is the vehicle that the barrier is behind of called?
The vehicle is a bus.
     src        edge_attr  dst
0      0             near   20
1      0      waiting for   20
2      0  to the right of   18
3      0  to the right of   12
4      0  to the right of   20
..   ...              ...  ...
128   25   to the left of   20
129   25   to the left of   23
130   26        on top of   18
131   26  to the right of   22
132   26  to the right of   24

[133 rows x 3 columns]