1 hour. Hualong Exhibition and Trade is the name of the examination room. Subject three includes the road driving skills test and the safe and civilized driving knowledge test. It is part of the motor vehicle driving license assessment. It is the abbreviation for the road driving skills and safe and civilized driving knowledge test subjects in the motor vehicle driver examination. , just go to the exam one hour in advance. When you arrive at the exam room, you have to wait for your name to be displayed on the big screen before you can go to the exam.