Abstract:The functions of some existing first-class highways do not match the traffic demand, the grade crossings and entrances are densely arranged, and the road sections and intersections are lack of scientific and reasonable traffic organization, resulting in the low traffic efficiency and poor road safety. Taking Daye Highway as an example, the traffic organization of the trunk first-class highway is designed and studied. Based on the functional orientation of the highway, the appropriate technical indicators are selected. Through the reasonable traffic organization design of general road sections and intersections and the design of guide signs, the overall operation efficiency and traffic safety of the highway have been improved, and the certain engineering experience and design reference are provided for the subsequent construction of the trunk first-class highway.