迂回道路 meaning in English

indirect route
outside route

On narrow or winding roads , or where there is a lot of oncoming traffic , drivers of large or slow - moving vehicles should be prepared to pull in , and slow down or stop , as soon as there is a suitable opportunity to do so , to give faster vehicles a chance to overtake
车身较大或速度较低的车辆，在窄路迂回道路或尾随车辆繁多的道路上，须尽量靠左行驶，并且减速或停车，让其他较快的车辆超前。