Road traffic simulation apparatus
First Claim
1. A computer implemented road traffic simulation apparatus representing a plurality of mobile units and traffic environments on a computer for simulating traffic situations in association with the mobile units, comprising:
- a mobile unit model including a driver model, a model of driving operations by a virtual driver, and a vehicle dynamics model, a model of physical behavior of each mobile unit;
means for assigning impassability levels in terms of numerical values to impassable zones and other mobile units and to restrictions by traffic regulations and by traffic facilities which restrict movement of one mobile unit of said mobile unit model and which are unitarily represented by the impassability levels indicating levels of difficulty for said one mobile unit to travel; and
means for moving said one mobile unit in said traffic environments in accordance with distribution of said impassability levels and a set route or a target route of said one mobile unit;
wherein the impassability level is a relative value with areas where the mobile unit cannot travel or not allowed to travel given a maximum value and with areas where the mobile unit may travel without difficulty given a minimum value.
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Abstract
In a road traffic simulation apparatus that expresses a plurality of mobile units and road traffic environments on a computer to simulate traffic situations in association with a plurality of mobile units, each of the mobile units is expressed by a combination of a driver model, a model of driving operations of a virtual driver, and a vehicle dynamics model, a model of physical behaviors of a mobile unit. The mobile units are programmed to travel independently to each other in a road traffic environment that is expressed on the computer.
59 Citations
18 Claims
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1. A computer implemented road traffic simulation apparatus representing a plurality of mobile units and traffic environments on a computer for simulating traffic situations in association with the mobile units, comprising:
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a mobile unit model including a driver model, a model of driving operations by a virtual driver, and a vehicle dynamics model, a model of physical behavior of each mobile unit; means for assigning impassability levels in terms of numerical values to impassable zones and other mobile units and to restrictions by traffic regulations and by traffic facilities which restrict movement of one mobile unit of said mobile unit model and which are unitarily represented by the impassability levels indicating levels of difficulty for said one mobile unit to travel; and means for moving said one mobile unit in said traffic environments in accordance with distribution of said impassability levels and a set route or a target route of said one mobile unit; wherein the impassability level is a relative value with areas where the mobile unit cannot travel or not allowed to travel given a maximum value and with areas where the mobile unit may travel without difficulty given a minimum value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer readable medium storing a road traffic simulation program that is configured to represent a plurality of mobile units and road traffic environments on a computer, when executed on the computer, said program performing:
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representing a plurality of mobile units, each mobile unit being represented by a driver model of driving operations by a virtual driver and a vehicle dynamics model of a physical behavior of each mobile unit; assigning impassability levels in terms of numerical values to impassable zones and other mobile units and to restrictions by traffic regulations and by traffic facilities which restrict movement of one mobile unit of said mobile unit model and which are unitarily represented by the impassability levels indicating levels of difficulty for said one mobile unit to travel; and moving said one mobile unit in said traffic environments in accordance with distribution of said impassability levels and a set route or a target route of said one mobile unit; wherein the impassability level is a relative value with areas where the mobile unit cannot travel or not allowed to travel given a maximum value and with areas where the mobile unit may travel without difficulty given a minimum value.
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11. A method of performing computer implemented simulation of road traffic involving a plurality of mobile units and traffic environments, comprising the steps of:
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preparing a mobile unit model having a driver model, a model of driving operations by a virtual driver, and a vehicle dynamics model, a model of physical behavior of each mobile unit; assigning impassability levels in terms of numerical values to impassable zones and other mobile units and to restrictions by traffic regulations and by traffic facilities which restrict movement of one mobile unit of said mobile unit model and which are unitarily represented by the impassability levels indicating levels of difficulty for said one mobile unit to travel; and moving said one mobile unit in said traffic environments in accordance with distribution of said impassability levels and a set route or a target route of said one mobile unit; wherein the impassability level is a relative value with areas where the mobile unit cannot travel or not allowed to travel given a maximum value and with areas where the mobile unit may travel without difficulty given a minimum value.
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12. A computer implemented road traffic simulation apparatus representing a plurality of mobile units and traffic environments on a computer for simulating traffic situations in association with the mobile units, comprising:
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a mobile unit model including a driver model, a model of driving operations by a virtual driver, and a vehicle dynamics model, a model of physical behavior of each mobile unit; means for assigning impassability levels in terms of numerical values to impassable zones and other mobile units and to restrictions by traffic regulations and by traffic facilities which restrict movement of one mobile unit of said mobile unit model and which are unitarily represented by the impassability levels indicating levels of difficulty for said one mobile unit to travel; means for moving said one mobile unit in said traffic environments in accordance with said impassability levels; and means for changing said impassability levels in accordance with change over time of operating status of road facilities; wherein the impassability level is a relative value with areas where the mobile unit cannot travel or not allowed to travel given a maximum value and with areas where the mobile unit may travel without difficulty given a minimum value. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification