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

644. Which of the following statements regarding a trailer is correct?

  1. ①When turning left, a trailer must maintain a turning angle similar to the one used for passenger cars.
  2. ②Shift to neutral when driving downhill to prevent sliding.
  3. ③The difference of radius between the inner wheels of a trailer is larger than that of a passenger car.
  4. ④The wheelbase of a trailer is shorter than that of a passenger car.
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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 186 (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.