On an expressway with 3 lanes in each direction, which statement about the lane-use standards is correct?
On expressways with three or more lanes in each direction, lane 1 is for overtaking, and the remaining lanes are split into left and right lanes assigned by vehicle type (Enforcement Rule, Appendix 9). Also remember the note that every vehicle may use a lane to the right of its designated lane.
Answer: ③
Explanation
In Appendix 9 of the Enforcement Rule, lane 1 of an expressway with 3 or more lanes each way is for passenger cars and light, small and medium buses that are overtaking. Of the remaining lanes 2 and 3, lane 2 is the left lane (passenger cars and light, small and medium buses) and lane 3 is the right lane (large buses, trucks, special vehicles, etc.). Under Note 2, any vehicle may use a lane to the right of its assigned lane, so passenger cars may use lane 3.
Legal basis: 도로교통법 시행규칙 제16조 별표9