Traffic-jam state calculation systems, methods, and programs
First Claim
1. A traffic-jam state calculation system comprising:
- a controller that;
obtains probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area;
detects, for each of the plurality of links, a first degree of a traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds;
obtains traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links;
compares, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds;
selects, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam; and
utilizes the selected threshold to determine a severity of the traffic jam for each of the plurality of links.
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Abstract
Systems, methods, and programs obtain probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area. The systems, methods, and programs detect, for each of the plurality of links, a first degree of a traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds. The systems, methods, and programs obtain traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links. The systems, methods, and programs compare, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds. The systems, methods, and programs select, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam and utilize the selected threshold to determine a severity of the traffic jam for each of the plurality of links.
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Citations
20 Claims
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1. A traffic-jam state calculation system comprising:
a controller that; obtains probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area; detects, for each of the plurality of links, a first degree of a traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds; obtains traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links; compares, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds; selects, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam; and utilizes the selected threshold to determine a severity of the traffic jam for each of the plurality of links. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15)
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11. A traffic-jam state calculation method comprising:
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obtaining probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area; detecting, for each of the plurality of links, a first degree of a traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds; obtaining traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links; comparing, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds; selecting, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam; and utilizing the selected threshold to determine a severity of the traffic jam for each of the plurality of links. - View Dependent Claims (12, 13, 14, 16, 17, 18, 19)
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20. A computer-readable storage medium storing a computer-executable program usable to calculate a traffic-jam state, the program comprising:
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instructions for obtaining probe information, the probe information comprising an average speed of probe cars traveling on each of a plurality of links in a predetermined area; instructions for detecting, for each of the plurality of links, a first degree of the traffic jam corresponding to the link for each of a plurality of different thresholds by comparing the average speed with each of the thresholds; instructions for obtaining traffic-jam information concerning the plurality of links, the obtained traffic information comprising a second degree of the traffic jam corresponding to each of the plurality of links; instructions for comparing, for each of the plurality of links, the second degree of the traffic jam with the first degree of the traffic jam for each of the thresholds; instructions for selecting, for the predetermined area, a threshold from the plurality of thresholds for which the first degree of the traffic jam most matches the second degree of the traffic jam; and instructions for utilizing the selected threshold to determine a severity of the traffic jam for each of the plurality of links.
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Specification