On an expressway with four lanes in each direction (no exclusive lanes), which are the designated lanes for trucks?
On an expressway with three or more lanes in each direction, the first lane is set aside as the overtaking lane and the remaining lanes are split in half into left and right lanes (Annex 9, Note 1 of the Enforcement Rule). Pay attention to which side the middle lane goes to when the remaining number is odd.
Answer: ①
Explanation
On an expressway with three or more lanes each way, lane 1 is for overtaking, and the remaining lanes (2, 3, 4) are split in half with the half nearer lane 1 being the left lanes, excluding the middle one if the count is odd. So lane 2 is the left lane, and lanes 3 and 4, which remain after excluding lane 1 and the left lane, are the right lanes (Enforcement Rule Annex 9, Note 1). Trucks use the right lanes, so their designated lanes are 3 and 4.
Legal basis: 도로교통법 시행규칙 제16조 별표9