Method of traffic congestion estimation

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United States of America Patent

PATENT NO 9449509
APP PUB NO 20130103295A1
SERIAL NO

13807229

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Abstract

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Disclosed is a method of traffic congestion estimation including a speed detection step of detecting speed of a vehicle in a predetermined period of time and outputting the detection result; a frequency analysis step of analyzing a frequency of the result of the speed detection and outputting the power spectrum; a slope detection step of detecting a slope of a power spectrum and outputting the detection result; a time variation calculation step of calculating time variation of the slope and outputting the calculation result; and a traffic congestion estimation step of estimating occurrence of traffic congestion from the calculation result of the time variation of the slope and outputting the estimation result.

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Patent Owner(s)

Patent OwnerAddress
HONDA MOTOR CO LTDTOKYO PORT AREA JAPAN TOKYO TOKYO METROPOLIS
THE UNIVERSITY OF TOKYOBUNKYO-KU TOKYO 113-8654

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eguchi, Junji Wako, JP 4 31
Koshizen, Takamasa Wako, JP 26 346
Nishinari, Katsuhiro Tokyo, JP 3 12

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