529. Which two statements about ignition interlock devices (IIDs) are correct?

1. ①An “ignition interlock device” is a device that prevents a vehicle from starting if the driver is intoxicated, as prescribed by the Minister of Interior and Safety.
2. ②Drivers holding a conditional license with IID restrictions must install the device on their vehicle and register it with the provincial or municipal police agency.
3. ③The period of the device’s installation begins from the date on which the driver’s period of disqualification ends.
4. ④In cases where a person drives a personal mobility device after drinking, if he/she receives another license revocation for drunk driving within five years, he/she must obtain a conditional driving license requiring the installation of an alcohol ignition interlock device.

Source KoROAD Safe Driving Integrated Civil Service, Driver's License Written Test Question Bank [English] (effective 2026-03-09), post 1923, Download the source PDF source PDF page 153 (checked on 2026-09-04). The question and answer are the KoROAD text as published. The buttons and notes on this page were written by the developer and have not yet been checked by a native speaker. The questions and answers themselves are the official KoROAD text.