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

878. What does this safety sign signify?

This is a picture question. The picture is not included on this page, so you need page 294 of the source PDF to answer it.

  1. ①A tunnel with two lanes in one direction
  2. ②A series of speed bumps
  3. ③A rough road surface ahead
  4. ④A submersible bridge with curves
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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 294 (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.