Subject 4, also known as subject 4 theory test and driver theory test, is a part of motor vehicle driver's license assessment.

The original examination consists of a theoretical examination in subject one, two exams in subject two, an electronic examination in subject three and a theoretical examination after the road test. Because this exam is conducted after subject three, everyone is used to calling it subject four exam. There is no theme 4 1 in the actual official statement.

Subject 4 lists the knowledge about safe and civilized driving, safe driving skills under complex conditions and emergency handling in the original subject 1, and puts it after the actual road driving test in "Subject 3" to further test the traffic quality of candidates.