EP1235195A2
Expired / Lapsed
EP
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Method of presuming traffic conditions by using floating cars
Assignee: Hitachi Ltd
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Filing: 2002-02-19
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Granted: —
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Expires: 2022-02-19
Abstract
Abstract The invention relates to a method of presuming traffic conditions for implementing a forecast and a presumption of traffic jam situation in an area where probe cars (101, 102) are not traveling currently, in which the probe cars (101, 102) send floating car data that is times and positions of traveled areas to center facilities (104), and the center accumulates the floating car data in a floating car data database (106) by traffic conditions presumption means (105) and also presumes forecast traffic jam information (120) in the forward areas of the probe cars (101, 102) and presumed traffic jam information (121) in the backward areas thereof by using the current floating car data and the floating car data database (106) accumulated from the past to the present.
Inventors
- 👤 Takumi Hitachi Ltd. Intell.Prop.Group Fushiki
- 👤 Kenichiro Hitachi Ltd. Intell.Prop.Group Yamane
- 👤 Takeshi Hitachi Ltd. Intell.Prop.Group Inoue
- 👤 Takayoshi Hitachi Ltd. Intell.Prop.Group Yokota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 11:31
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/0104; G08G1/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A method of presuming traffic conditions by
using time information and positional information in a
passing route gathered by a movable body, wherein floating car data and a group of
floating car data accumulated from the past to the present
including the data gathered by other movable bodies
are used to presume the traffic jam situation in
the forward sections of the movable body currently
gathering said floating car data.
Claim 2
Independent Claim
34 words
A method of presuming traffic conditions by
using floating car data, wherein said floating car data is used to
presume a traffic jam situation in sections from backward
to forward around the probe car.
Claim 3
Dependent Claim
24 words
The method of presuming traffic conditions
according to claim 2, wherein sensors installed on a road are used
to presume said traffic jam situation.
Claim 4
Independent Claim
131 words
A system for presuming and presenting traffic
conditions, comprising: floating car data; traffic conditions presumption means (105)
for, by using the floating car data and a group of the
floating car data including data gathered by other movable
bodies accumulated from the past to the present,
presuming the traffic jam situation in the forward sections
of the movable body currently gathering said
floating car data; communication means (122) for receiving the
floating car data sent from a plurality of probe cars;
and a floating car data database (106) storing a
group of floating car data accumulated from the past to
the present, wherein the traffic jam situation in a road
network is forecasted or presumed, and said traffic jam
situation is presented to a user as presented traffic
jam information (117).
Claim 5
Independent Claim
110 words
A system for presuming and presenting traffic
conditions, comprising: floating car data; traffic conditions presumption means (105)
for presuming a traffic jam situation in sections from
backward to forward around the probe car (101, 102;
801) by using the floating car data; communication means (122) for receiving the
floating car data sent from a plurality of probe cars
(101, 102; 801); and a floating car data database (106) storing a
group of floating car data accumulated from the past to
the present, wherein traffic jam situation in a road network
is forecasted or presumed, and said traffic jam
situation is presented to a user as presented traffic
jam information (117).
Claim 6
Dependent Claim
52 words
An on-vehicle terminal having communication
means (1302) for receiving surrounding traffic conditions
provided from the center facilities, and also
having traffic conditions presumption means (1303) for
forecasting traffic jam situation in the forward section
of its own vehicle by using the traffic information
and floating car data gathered by its own vehicle.
Claim 7
Dependent Claim
27 words
A system for presuming and presenting traffic
conditions having communication means (1401 - 1407) for
sending surrounding traffic conditions to the on-vehicle
terminal according to claim 6.
Claim 8
Dependent Claim
38 words
A system for presuming and presenting traffic
conditions, wherein the surrounding traffic conditions
according to claim 7 is a group of floating car data
accumulated from the past to the present by a plurality
of probe cars (1411).
Claim 9
Independent Claim
63 words
A system for presuming and presenting traffic
conditions having communication means (1501) for receiving
floating car data gathered by individual probe
cars, wherein the floating car data and surrounding
traffic conditions are used to forecast a traffic jam
situation forward of the probe car having sent the
floating car data and it is presented to a user as
presented traffic jam information (117).
Claim 10
Dependent Claim
28 words
A system for presuming and presenting traffic
conditions, wherein the surrounding traffic conditions
according to claim 9 are floating car data accumulated
from the past to the present.
Claim 11
Independent Claim
64 words
A system for presuming and presenting traffic
conditions, wherein traffic jam situation is presumed by
at least one of the traffic conditions presumption
means (105) according to any one of claims 4 to 10, and
reliability (63) in a section so presumed is calculated
so as to present to a user the presumed traffic jam situation
and the reliability (63) as presented traffic
information.
Claim 12
Dependent Claim
57 words
An on-vehicle terminal to be mounted on a
probe car in the system for presuming and presenting
traffic conditions according to any one of claims 4, 5,
9, 10 and 11 having position detection means (203) for
measuring floating car data and communication means
(202; 1302) for sending the floating car data to the
center facilities (104).
Claim 13
Dependent Claim
45 words
A communication system for transmitting
presented traffic information (117) that is a traffic
jam situation or surrounding traffic conditions presumed
by at least one of the traffic conditions presumption
means (105) according to any one of claims 4, 5,
7, 8, 9, 10 and 11.
Claim 14
Dependent Claim
56 words
A user terminal, comprising: one communication means (1501) for receiving
as presented traffic jam information (117) a traffic
jam situation presumed by at least one of the traffic
conditions presumption means (105); and presentation means (1502) for presenting the
presented traffic jam information (117) to a user according
to any one of claims 4 to 11.
References Cited (Backward Citations)
No citation records indexed.
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