①When a second vehicle subject to a higher maximum speed limit as prescribed by Cabinet Order based on Article 22, paragraph (1) (hereinafter referred to in this Article as the "maximum speed limit") catches up with a first vehicle (other than a motor vehicle that a provider of motor carrier services for ride-sharing by general passengers as prescribed in Article 9, paragraph (1) of the Road Transportation Act uses for scheduled transportation on a fixed route as prescribed in Article 5, paragraph (1), item (iii) of that Act or a motor vehicle used for motor carrier services open to specific passengers as prescribed in Article 3, item (ii) of that Act (hereinafter referred to as a "bus"), and other than a trolleybus), the first vehicle must not increase its speed until the second vehicle has finished passing it. The same applies when a second vehicle that is subject to the same or a lower maximum speed limit catches up to a first vehicle, if the driver of the first vehicle seeks to continue to travel at a lower speed than the second vehicle.

②Notwithstanding Article 18, paragraph (1), unless a road has vehicle traffic lanes, if a second vehicle subject to a higher maximum speed limit catches up with a first vehicle (other than a bus or trolleybus) and there is insufficient room between the center of the road (or the right edge of the road, if the road is a one-way street; the same applies hereinafter in this paragraph) and the first vehicle for the second vehicle to pass, the driver of the first vehicle must give way to the second vehicle by bringing the first vehicle as close as possible to the left edge of the road. The same applies when a second vehicle that is subject to the same or a lower maximum speed limit catches up to a first vehicle, if the driver of the first vehicle seeks to continue to travel at a lower speed than the second vehicle and there is insufficient room between the center of the road and the first vehicle for the second vehicle to pass.