Patent
Traffic information calculation device, traffic information calculation program and traffic information calculation method
TLDR
In this article, the traffic information such as a traffic jam degree by considering waiting for a traffic light to change to obtain an accurate travel time when obtaining travel time information by use of information of a probe vehicle.Abstract:
PROBLEM TO BE SOLVED: To accurately decide traffic information such as a traffic jam degree by considering waiting for a traffic light to change to obtain an accurate travel time when obtaining travel time information by use of information of a probe vehicle. SOLUTION: Position/speed data of the vehicle traveling in a road section are collected (S1), a traffic light waiting time and a frequency of the waiting for the traffic light to change in the road section of the vehicle are calculated based on a collected speed V of the vehicle (S6), and the traffic light waiting time is subtracted from the travel time of the road section (S8) to calculate the net travel time of the road section, and the traffic information such as the traffic jam degree of the road section is decided based on the net travel time (S10). COPYRIGHT: (C)2009,JPO&INPITread more
Citations
More filters
Patent
Road section speed limit information identification method based on floating vehicle technology
Liao Lvchao,Jiang Xinhua,Zou Fumin,Lai Hongtu,Wang Tongsen,Zhu Quan,Chen Liwen,Gangyu Guan,Fangzhou Zhang,Chen Peiqi,Dandan Zhu,Likun Zhao,Xiaofang Tang +12 more
TL;DR: In this article, a road section speed limit information identification method based on a floating vehicle technology was proposed, where massive floating vehicle data were used to carry out automatic identification on speed limit Information of all road sections, so that accurate and reliable road section information is provided for a driver and a traffic system.
Patent
Congestion information generation device, congestion information generation method, and program
TL;DR: In this article, a portable terminal device transmits probe information comprising GPS positional information and positioning time information to a center device, which uses the probe information to calculate the average speed for every prescribed road link, and finds a congestion level based on the relation between the congestion level and a road type and speed.
Patent
Method for presenting result of determination of whether vehicle is stopped, device for determining whether vehicle is stopped, and system for determining whether vehicle is stopped
Inoue Kazunori,Yukio Shikatani +1 more
TL;DR: In this article, a low-speed interval extraction unit (120) is used to extract a low speed interval from GPS information, and a vehicle speed transition model generating unit (130) for generating a model having, as constraint condition, the length and the amount of time of the low speed intervals, indicating temporal transition of the speed in such a way that the speed continuously increases to the second time point after having decreased from the first time point.
Patent
Intelligent traffic management system and implementation method thereof
TL;DR: In this article, an intelligent traffic management system and an implementation method of the system is described. But the authors focus on the problem of urban traffic related to urban travel tide lanes, wait for the green light at intersections, emergency passageways, life passageway and the like.
Patent
Communication control system with ad hoc wireless communication function
Hidenori Akita,Saito Toshiya +1 more
TL;DR: In this article, a first determiner determines at least one wireless communication unit in a number of wireless communication units in a plurality of vehicles as a first enabling unit that enables wireless communications with the communication control apparatus.
References
More filters
Patent
Travel data determination device
TL;DR: In this paper, the authors proposed a travel data determination device capable of determining contents of data showing a stop of a vehicle without requiring installation of a sensor collecting vehicle control information in a vehicle.
Patent
Traffic flow parameter calculation system, method, and program
TL;DR: In this paper, a traffic flow parameter calculation system is configured to acquire vehicle location data from an on-vehicle device loaded on at least two vehicles traveling on a target road entering an intersection, and to calculate the number S of passing vehicles interposed between passage time t11 and t21 of the vehicle sensors of two vehicles.
Related Papers (5)
Method for traffic situation determination on the basis of reporting vehicle data for a traffic network with traffic-controlled network nodes
Boris S. Kerner,Hubert Rehborn +1 more