This is the intersection across the street from our AirBnB in Daan Park. These people have come from the direction the bus is going, but want to turn left. The scooters aren’t allowed to turn with the cars so instead they drive across the intersection beside the crosswalk and then aim at the direction perpendicular to their originating direction.
These represent the first wave and there is often, as in the case here, another 15-20 scooters behind them massed up at the light who had already been going that direction. There is a great roar created as they all take off!