| 摘要 |
PURPOSE: A twelve-way intersection is provided to enlarge the capacity of a road by letting vehicles pass to twelve ways without signals, to prevent traffic accidents, to economize in construction expenses and to utilize narrow land effectively. CONSTITUTION: The twelve-way intersection comprises: an overhead bridge(10) extended from an upper road(50) and located on a lower road(60) to let advancing vehicles move without obstruction; a rotary crossroad(20) located under the overhead bridge(10) to make possible the rotation of the traveling vehicles on the upper road(50); an underground passage(30) installed under the lower road(60) to make possible the rotation of the traveling vehicles on the lower road(60); and a connection crossroad(70) installed on four corners of the intersection to connect the upper road(50) and the lower road(60) and to make vehicles travel on the rotary crossroad(20) and the underground passage.
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