Coming from Penang, Kuala Lumpur and Singapore, where busses close their doors, it was quite and adventure to ride in a bus with doors that do not close.
There was an ankle high barrier that would do nothing but trip you up and cause you to flip outside the door should the bus come to a sudden halt and that was pretty much it between me and the asphalt.
Of course none of that happened and I arrived safe and sound at my destination.