553. According to the Road Traffic Act and its Enforcement Decree, which of the following are the TWO least appropriate statements regarding acts intended to obstruct alcohol testing?

1. ①A person who is reasonably suspected of being under the influence and who intentionally drinks more alcohol in order to interfere with the police officer's testing is considered to be obstructing the alcohol test.
2. ②A person who has driven a motor vehicle and who commits an act of obstructing the alcohol test may be punished by imprisonment for up to 1 year or criminal fine of up to KRW 5 million.
3. ③A person who is reasonably suspected of being under the influence and who uses substances such as medicine that may affect the blood alcohol concentration (as prescribed by the Ordinance of the Ministry of Interior and Safety) is considered to be obstructing the alcohol test.
4. ④A person who is reasonably suspected of being under the influence and who commits an act of obstructing the alcohol test after riding a bicycle is not considered to be obstructing the alcohol test.

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 161 (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.