B2 subject three safety officers randomly send cars?

It's a random delivery truck. The cars assigned by the safety officer of B2 subject 3 are randomly grouped by computer. B2 subject 3 * * has 16 test items, including getting on the bus, starting, driving in a straight line, adding and subtracting gears, changing lanes, pulling over, going straight through intersections, turning right at intersections, turning left at intersections, crossing crosswalks, passing through school areas, passing bus stops, overtaking, overtaking, turning around and driving at night.