Process for constructing road net model for traffic navigation system and traffic emulation system

Abstract

The invention discloses a road network model construction method used for the traffic navigation system and the traffic simulation system. The road network model construction method is used for storing the electronic map in the traffic navigation system and defining the virtual road network in the traffic simulation system. The construction method adopts the as the basic unit and adopts the directed graph as the abstract data structure; the model construction method includes the network entity description method, the lane connectivity description method, the intersection traffic rule description method and the method which adopts the XML format to store the road network data files. The road network model construction method has the advantages that the constructed road network model can realize the description of the contents, including the shape and position features of roads, the inter-road connective relation, the inter-lane connective relation, adjacent relation, steering limitations and the attribute information, and the traffic rules of the road intersections; the constructed road network model also can organize and manage great quantities of attribute and connectivity information.

Description

technical field [0001] The invention relates to a method for constructing an urban traffic road network description model, in particular to a formalized description of the model and a data storage method for the model. Background technique [0002] The road network model is used to describe the information of road network topology and road network entities, and is the basic component of traffic navigation system and traffic simulation system. For the former, the road network model is mainly used to represent the road traffic network (electronic map), plan passenger travel routes and implement visualized real-time traffic navigation. For the latter, traffic simulation usually establishes a vehicle motion simulation model and a data analysis model on the road network model, and then executes the vehicle motion simulation, and obtains and analyzes the motion results. The amount of information, organizational structure, and data storage methods described by the road network mod...

AI Technical Summary

Problems solved by technology

However, it cannot represent the adjacency characteristics between lanes, and it cannot guide (or simulate) the lane-changing behavior during vehicle driving; it cannot effectively organize and manage a huge amount of data such as road attributes, lane attributes, and lane connectivity.

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