(1) When deemed necessary to ensure smooth flow of traffic of motor vehicles and horses, the commissioner of a City/Do police agency may mark a lane prescribed by Decree of the Ministry of the Interior and Safety on a road. In such cases, the commissioner of a City/Do police agency may mark up a reversible lane with signal apparatus to indicate the direction of traffic on any road in which the traffic volume of both directions varies greatly according to time, in order to optimize the number of lanes available for the direction with the greatest traffic volume. <Amended on Mar. 23, 2013; Nov. 19, 2014; Jul. 26, 2017; Dec. 22, 2020>
(2) Except as otherwise provided in this Act or orders issued under this Act, drivers of motor vehicles and riders of horses shall pass along the lane marked on a road; provided, when the commissioner of a City/Do police agency designates the means for traffic otherwise, drivers of motor vehicles and riders of horse shall pass through the lane according to such means. <Amended on Dec. 22, 2020>
(3) Where it is intended to travel along a road in which the lane is marked and the width of any motor vehicle is wider than that of a lane prescribed by Decree of the Ministry of the Interior and Safety, which is likely to impede safe and smooth flow of traffic, the driver of such motor vehicle shall be prohibited from traveling along such road; provided, the same shall not apply where the driver of any motor vehicle obtains permission therefor from the chief of the police station having jurisdiction over the place of his or her departure, as prescribed by Decree of the Ministry of the Interior and Safety. <Amended on Mar. 23, 2013; Nov. 19, 2014; Jul. 26, 2017>
(4) Where a motor vehicle for which permission under the proviso of paragraph (3) is to be obtained corresponds to a motor vehicle required to obtain an operation permit under the proviso of Article 77 (1) of the Road Act, the chief of the relevant police station shall have a prior consultation with the road management agency of the relevant road which the motor vehicle intends to travel along, as prescribed by Presidential Decree, and the motor vehicle which has obtained the permit from the chief of the police station following such consultation shall be deemed to have received the operation permit under the proviso of Article 77 (1) of the Road Act. <Added on Dec. 30, 2014>
(5) Drivers of motor vehicles and riders of horses shall be prohibited from shifting their routes on the road in which any shift in route is especially prohibited by safety signs; provided, the same shall not apply where obstacles exist due to any damaged road or any road works, etc. <Amended on Dec. 30, 2014>[This Article Wholly Amended on Jun. 8, 2011]