Traffic information prediction device

• US 20060025925A1
• Filed: 07/27/2005
• Published: 02/02/2006
• Est. Priority Date: 07/28/2004
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kumagai, Masatoshi, Fushiki, Takumi, Kimita, Kazuya, Yokota, Takayoshi
• Granted Patent: US 7,636,630 B2
• Time in Patent Office: Days
• US Class Current: 701/210
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station

Abstract

There is provided a prediction calculation system capable of allowing a numerical traffic information to be predicted in such a manner that day factors and the like are reflected thereon. Even if a day whose combination of the day factors is the same as that of a prediction-target day, i.e., a day with the same instance, does not exist within a time-period during which past traffic information has been accumulated, the prediction calculation unit merges the past traffic information appropriately, thereby predicting traffic information corresponding to the objective combination of the day factors. Concretely, the prediction calculation unit combines some of characteristic quantities of the past traffic information on a day-unit basis, thereby approximately reconstructing and predicting the instance.

Claims

1. A traffic-information providing device, comprising:

a traffic-information database for recording past traffic-information time-sequence data,

an input device for inputting plural day factors on a prediction-target day, or date of said prediction-target day,

a traffic-information calculation device for determining, based on said past traffic-information time-sequence data, traffic-information time-sequence data corresponding to said plural day factors inputted from said day-factors input device,

a route input device for specifying a prediction-target route between two locations, and

day-factors classification setting means for setting day-factors classifications, wherein,

said day-factors classification setting means sets said day-factors classifications for each prediction-target route specified by said route input device.

3. The traffic-information providing device according to claim 1, further comprising traffic-information managing means for managing traffic-information time-sequence data which differs for each user who has specified said day-factors classifications.

4. The traffic-information providing device according to claim 1, further comprising day-factors classification collecting means for collecting day-factors classification data for each user who has specified said day-factors classifications,

said traffic-information calculation device determining traffic-information time-sequence data corresponding to said day-factors classifications collected.

2. A traffic-information providing device, comprising:

a traffic-information database for recording past traffic-information time-sequence data,

an input device for inputting plural day factors on a prediction-target day, or date of said prediction-target day,

a traffic-information calculation device for determining, based on said past traffic-information time-sequence data, traffic-information time-sequence data corresponding to said plural day factors inputted from said day-factors input device,

an area input device for specifying an area in which day-factors classifications are to be set, and

day-factors classification setting means for setting said day-factors classifications, wherein,

said day-factors classification setting means sets said day-factors classifications for each route which exists in said area specified by said area input device.

5. A traffic-information providing device, comprising:

a traffic-information database for recording past traffic-information time-sequence data,

an input device for inputting plural day factors on a prediction-target day, or date of said prediction-target day,

a traffic-information calculation device for determining, based on said past traffic-information time-sequence data, traffic-information time-sequence data corresponding to said plural day factors inputted from said day-factors input device,

a route input device for specifying a prediction-target route between two locations, and

time-delay-risk predicting means for determining a delay risk of necessity time in said specified route specified by said route input device.

6. The traffic-information providing device according to claim 5, wherein said arrival-time delay risk provided varies depending on said day factors and time-zones.

7. The traffic-information providing device according to claim 5, wherein said arrival-time delay risk provided is represented by combination of delay-time class value and delay occurrence probability, or by delay risk level.

8. A traffic-information providing device, comprising:

a traffic-information database for recording past traffic-information time-sequence data, an input device for inputting plural day factors and a route on a prediction-target day of traffic conditions, and

a traffic-information calculation device for determining, based on said past traffic-information time-sequence data, traffic-information time-sequence data corresponding to said plural day factors,

said traffic-information calculation device also predicting a delay of time from said traffic conditions predicted based on said plural day factors, said time being needed for driving along said route.

9. The traffic-information providing device according to claim 8, further comprising:

an area input device for specifying an area in which day-factors classifications are to be set, and

day-factors classification setting means for newly setting a day factor which should be inputted.