Extraction of Major Intersections by Only Vehicle Trajectory Data

Abstract

Most of researches of road network generation by vehicle trajectory data are focused on generating a complex network which can be used in car navigation. However, there is no research on generating a network with major roads and intersections for analysis. This paper introduces a simple way to extract major intersections by using vehicle trajectory data only. We checked the distribution of trajectory data around intersections and applied the spatial scan statistics with two kinds of distributions, the angle distribution of azimuths, and the spatial distribution of data with large turning angles. We extracted areas with large variance on angle distribution, as well as areas where data with large turning angles concentrate, as intersection areas, and then discussed the validity of extracted intersections. As a result, a future possibility of generating a network for analysis by using large scale vehicle trajectory data is shown in this paper.