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

423. Which of the following is NOT a proper way of driving in fog?

  1. ①Honk when driving around a curve or on a hill.
  2. ②If the visibility in fog is less than 70 m, reduce speed to less than half of the speed limit.
  3. ③Try to maximize visibility by turning on fog lamps and high-beam headlights.
  4. ④Even in case of vehicle failure or minor accident, move the vehicle to the side of the road.
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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 120 (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.