Method for Investigating Variants for Modernization of the Road Network Section in the Gis Environment
The present article discusses the methods to substantiate modernization of a road transport interchange on the basis of traffic modeling and calculating its parameters in the GIS environment. For support of the method in the GIS environment in ArcGIS, a pyramid of road network models is created, which include the central-axial, corridor and lane models. This article presents the algorithm for a calculation of modernization variants with the use of statistical investigation of the traffic on an existing section of the road network. Using geographically-referenced cost matrices of correspondences makes it possible to predict particular and summed traffic volumes, fuel consumption and other parameters used as criteria for optimization. The entire chain of actions is demonstrated on the example of pre-project investigation of the possibility to modernize Krasnogvardeyskaya square in Saint-Petersburg. The article presents an economical evaluation of the discussed variants. Topological similarity of various circular elements of the road network – from the simplest discussed section to circular roads of the largest cities – provide the conditions to use the method for random elements of this type.