Which statement about the timing and method of signals is NOT correct?
The timing and method of signals for changing lanes, stopping, reversing, and entering and leaving a roundabout are set in Annex 2 of the Enforcement Decree of the Road Traffic Act. The turn signal used when entering a roundabout differs from the one used when leaving it, so do not mix up the direction, and note that this question asks for the incorrect statement.
Answer: ④
Explanation
According to Table 2 of the Enforcement Decree (Article 21), you must use the right turn indicator when exiting a roundabout, so 'left' is wrong. The left indicator is used when entering a roundabout. Signaling at least 100 meters ahead when changing course on an expressway, extending the arm 45 degrees downward or using brake lights when stopping, and using reversing lights when backing up all match Table 2.
Legal basis: 도로교통법 시행령 제21조 별표2