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

447. If your vehicle breaks down on an expressway at night, in addition to a safety tripod sign, etc. you must install road flare signals to provide visibility for ( ) and alert other motorists that your car has broken down. Choose the correct one to fill in the brackets.

  1. ①200 m in every direction.
  2. ②300 m in every direction.
  3. ③400 m in every direction.
  4. ④500 m in every direction.
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Answer ④

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 127 (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.