Traffic signal control apparatus, traffic signal control method, and computer program
First Claim
1. A traffic signal control apparatus comprising:
- an acquisition unit configured to acquire an inflow traffic volume at a first intersection defined below;
an estimation unit configured to estimate an inflow traffic volume at a second intersection defined below, on the basis of the acquired inflow traffic volume at the first intersection;
an information processing unit configured to generate a signal control parameter for a first controller defined below, on the basis of the acquired inflow traffic volume at the first intersection, and generate a signal control parameter for a second controller defined below, on the basis of the estimated inflow traffic volume at the second intersection; and
a communication unit configured to transmit the generated signal control parameter for the first controller to the first controller, and to transmit the generated signal control parameter for the second controller to the second controller, whereinfirst intersection;
an intersection at which a road side sensor is installed to obtain an inflow traffic volume at the intersection,second intersection;
an intersection at which no road side sensor is installed, wherein no inflow traffic volume at the intersection is obtained,first controller;
a traffic signal controller installed at the first intersection, andsecond controller;
a traffic signal controller installed at the second intersection.
1 Assignment
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Accused Products
Abstract
A central device 4 includes: a measurement processing unit 410 that acquires an inflow traffic volume at a first intersection Ci-1; an estimation processing unit 411 that estimates an inflow traffic volume at a second intersection Ci-2 on the basis of at least one of the inflow traffic volume at the first intersection Ci-1 and probe data obtained from a traveling vehicle 5; a control processing unit 412 that generates signal control parameters for the first intersection Ci-1 on the basis of the inflow traffic volume at the first intersection Ci-1, and generates signal control parameters for the second intersection Ci-2 on the basis of the estimated inflow traffic volume at the second intersection Ci-2; and a communication unit 403 that transmits the generated signal control parameters for the first intersection Ci-1 to a traffic signal controller 1a at the first intersection Ci-1, and transmits the generated signal control parameters for the second intersection Ci-2 to a traffic signal controller 1a at the second intersection Ci-2.
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Citations
9 Claims
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1. A traffic signal control apparatus comprising:
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an acquisition unit configured to acquire an inflow traffic volume at a first intersection defined below; an estimation unit configured to estimate an inflow traffic volume at a second intersection defined below, on the basis of the acquired inflow traffic volume at the first intersection; an information processing unit configured to generate a signal control parameter for a first controller defined below, on the basis of the acquired inflow traffic volume at the first intersection, and generate a signal control parameter for a second controller defined below, on the basis of the estimated inflow traffic volume at the second intersection; and a communication unit configured to transmit the generated signal control parameter for the first controller to the first controller, and to transmit the generated signal control parameter for the second controller to the second controller, wherein first intersection;
an intersection at which a road side sensor is installed to obtain an inflow traffic volume at the intersection,second intersection;
an intersection at which no road side sensor is installed, wherein no inflow traffic volume at the intersection is obtained,first controller;
a traffic signal controller installed at the first intersection, andsecond controller;
a traffic signal controller installed at the second intersection. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A traffic signal control apparatus comprising:
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an acquisition unit configured to acquire an inflow traffic volume at a first intersection defined below; an estimation unit configured to estimate an inflow traffic volume at a second intersection defined below, on the basis of the acquired inflow traffic volume at the first intersection; an information processing unit configured to generate a signal control parameter for a first controller defined below, on the basis of the acquired inflow traffic volume at the first intersection, and generate a signal control parameter for a second controller defined below, on the basis of the estimated inflow traffic volume at the second intersection; and a communication unit configured to transmit the generated signal control parameter for the first controller to the first controller, and to transmit the generated signal control parameter for the second controller to the second controller, wherein first intersection;
an intersection at which an inflow traffic volume can be obtained,second intersection;
an intersection at which an inflow traffic volume cannot be obtained,first controller;
a traffic signal controller installed at the first intersection, andsecond controller;
a traffic signal controller installed at the second intersection,wherein the information processing unit is capable of executing a subarea connection determination process of determining, on the basis of a traffic condition, whether or not a plurality of intersections adjacent to each other are included in the same subarea, and the determination process includes; calculating a first evaluation value obtained from a predetermined evaluation condition in a case where signal control is performed with cycle lengths respectively set at a plurality of intersections adjacent to each other, and a second evaluation value obtained from the predetermined evaluation condition in a case where signal control is performed such that each of the respective cycle lengths of the plurality of intersections adjacent to each other is set to be the same value as a cycle length which is obtained based on reliability indicating a degree of reliability obtained based on a process for obtaining a signal control parameter at each intersection; and determining whether or not the plurality of intersections adjacent to each other are included in the same subarea, on the basis of comparison between the first evaluation value and the second evaluation value.
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9. A traffic signal control method comprising:
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acquiring an inflow traffic volume at a first intersection defined below; estimating an inflow traffic volume at a second intersection defined below, on the basis of the acquired inflow traffic volume at the first intersection; generating a signal control parameter for a first controller defined below, on the basis of the acquired inflow traffic volume at the first intersection, and generating a signal control parameter for a second controller defined below, on the basis of the estimated inflow traffic volume at the second intersection; and transmitting the generated signal control parameter for the first controller to the first controller, and transmitting the generated signal control parameter for the second controller to the second controller, wherein first intersection;
an intersection at which a road side sensor is installed to obtain an inflow traffic volume at the intersection,second intersection;
an intersection at which no road side sensor is installed, wherein no inflow traffic volume at the intersection is obtained,first controller;
a traffic signal controller installed at the first intersection, andsecond controller;
a traffic signal controller installed at the second intersection.
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Specification