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General An intersection may be defined as an area shared by two or more roads, thus allowing drivers an option to change route direction. Intersections may be divided into three broad categories: grade separated without ramps (which simply allows the two routes to share the same space without making any provision for route changes), grade separated with ramps (more commonly known as an interchange), and at-grade intersections. At-grade intersections may be divided into three categories—T or three-leg intersections, cross or four-leg intersections, and multileg intersections. The two primary aspects of an at-grade intersection…
Indranil Goswami: Civil Engineering All-In-One PE Exam Guide: Breadth and Depth, Second Edition. Intersections, Chapter (McGraw-Hill Professional, 2012), AccessEngineering Export