Driver's license written test question bank, effective 2026-03-09

473. Which of the following is true about using turn signals?

  1. ①It is not a violation to change lanes without signaling if it does not obstruct the other vehicles.
  2. ②You must keep the turn signal on for a while after changing lanes.
  3. ③The traffic penalty for failure to signal lane change for passenger vehicles and buses is a fine of KRW 30,000.
  4. ④When changing lanes on an expressway, turn on the turn signal from 30 m before and keep it on until you have completed changing lanes.
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Answer ③

The English PDF has no explanation for this question. The Korean page carries the official explanation. Korean version of this question

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 135 (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.