Which of the following statements about the speed of motor vehicles and trams is NOT correct?
Speeds are set by Ordinance of the Ministry of the Interior and Safety, and the authority that may restrict speed differs between expressways and other roads (Article 17 of the Road Traffic Act). Watch out for statements that swap the two authorities, and check whether the duty to keep to the maximum and minimum speed has any exceptions.
Answer: ④
Explanation
Article 17(3) of the Road Traffic Act prohibits exceeding the maximum speed or driving below the minimum speed, but makes an exception when congestion or other unavoidable reasons force a driver below the minimum. So option 4 is incorrect. Speeds are set by ministerial ordinance (paragraph 1), and the National Police Agency chief handles expressways while the Metropolitan/Provincial Police Agency chief handles other roads (paragraph 2).
Legal basis: 도로교통법 제17조