How many times did the new Tianan subjects in Tianshui city take the exam?

16 times. According to the announcement issued by Tianshui Xintianan Vehicle Management Office, as of July, 2023, there were 16 items in the whole course of Tianshui Xintianan subject 3, namely, getting on the bus, starting, driving in a straight line, adding and subtracting gears, changing lanes, pulling aside, going straight at the intersection, turning left at the intersection, turning right at the intersection, passing through the crosswalk, passing through the school area and passing through the bus stop.