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

645. Which of the following is the safest way to drive a trailer truck loaded with cargo, traveling at a speed of 50 km/h on a road with one lane in one direction that curves to the right?

  1. ①Slowing down can cause the vehicle to overturn. It is safer to drive at an increased speed into the curve.
  2. ②Drive into the other lane to reduce the turning radius.
  3. ③Drive into the curve at the current speed so as not to hold up the traffic behind.
  4. ④Slow down and safely enter the curve to prevent the vehicle from rolling over due to centrifugal force.
Show the answer

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 187 (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.