JP2006098279A - Traffic information display method, traffic information display device, and traffic information providing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To visually display traveling speed and staying time in a prescribed section on a road so that a user intuitively recognizes traffic situation. <P>SOLUTION: As a speed-time combination graph 200, its abscissa is assumed to be an objective road section (distance) and a prescribed reference speed is depicted so as to have a reference height 203. For each unit section, a traveling speed graph 201 inversely proportional to traveling speed is displayed in a portion lower than the reference height 203 as to places where the traffic flows smoothly since traveling speeds are higher than the reference speed while a staying time graph 202 proportional to staying time is displayed in a portion upper than the reference height 203 as to places which are jammed since traveling speeds are lower than the reference speed. Because of this, the graph is expressed which is made by smoothly joining/combining the speed graph 201 and the time graph 202 to visually display traffic conditions such as the degree of road congestion in an objective section. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a traffic information display method, a traffic information display device, and a traffic information providing device for displaying traffic information on a predetermined section on a road on a terminal screen or the like.

  As a device for displaying traffic information such as road traffic congestion, for example, in a vehicle navigation device, a specific road is divided into a plurality of sections, and the degree of congestion for each section based on the traffic information received by the road traffic information receiving means. Is detected, and the degree of traffic congestion for each section is displayed as a histogram along a specific road on the display (see Patent Document 1).

  Also, it receives traffic information from the traffic information provider, calculates the traveling speed when passing through the road in the traffic jam section based on the traffic jam information included in the traffic information, and displays the traffic jam information and the driving speed in the corresponding section of the map display screen. A navigation system and a traffic jam information display method which are displayed so as to overlap each other are known (see Patent Document 2).

  The conventional navigation device and the like as described above can inform a driver or the like of the degree of traffic jam in a road section where traffic jam occurs. However, a user such as a driver cannot easily know how much the traffic flow (traveling speed) of the non-congested section is, and the time required to pass through the congested section (residence time, (Waiting time) cannot be known. For this reason, it has been difficult to intuitively recognize stress or the like due to the influence of traffic congestion on the route to be traveled.

JP-A-8-44997 JP 2001-289649 A

  The present invention has been made in view of the above circumstances, and can visually display a traveling speed and a staying time in a predetermined section on a road so that a user can intuitively recognize a traffic situation. It is an object to provide a traffic information display method, a traffic information display device, and a traffic information providing device.

  The traffic information display method of the present invention is a traffic information display method for displaying traffic information relating to a predetermined section on a road, and acquiring or generating information on traveling speed and travel time in the predetermined section as the traffic information; Providing a reference point corresponding to a predetermined reference speed set with respect to the travel speed in the display image; and for a portion where the travel speed in the predetermined section is faster than the reference speed, A step of generating a travel speed graph showing the travel speed on the side, and a location where the travel speed in the predetermined section is slower than the reference speed in the same direction as the travel speed graph or in another direction with respect to the reference point The step of generating a residence time graph showing the travel time of the corresponding section is connected to the travel speed graph and the residence time graph. In which a step of displaying the velocity time synthesis graph on the display means.

  This makes it possible to visually display the traveling speed and staying time in a predetermined section on the road, and the user can intuitively understand the traffic situation such as staying and smoothness of traffic flow, occurrence of traffic jams and their degree. It becomes possible to recognize.

Further, as one aspect of the present invention, in the traffic information display method described above, in the step of generating the dwell time graph, with respect to the reference point, the travel speed in the predetermined section is slower than the reference speed. The dwell time graph is generated on the other side opposite to the travel speed graph.
As a result, the user can intuitively recognize the traveling speed and the staying time in a predetermined section on the road.

Further, as one aspect of the present invention, the traffic information display method includes the step of generating a road map image of the predetermined section, and in the displaying step, the road map image along the road of the road map image The speed time composite graph shall be displayed.
This makes it possible to more intuitively understand the traveling speed and the staying time corresponding to the target road section in association with the road map. For example, it is possible to easily visually recognize the traffic situation related to a predetermined route by displaying a speed time composite graph for a route set by the user or displaying a speed time composite graph for a plurality of routes. .

  Further, as one aspect of the present invention, in the traffic information display method described above, in the displaying step, the residence time of the corresponding section is numerically displayed together with the residence time graph. As a result, the user can clearly grasp the residence time by a numerical value.

  Further, as one aspect of the present invention, in the traffic information display method described above, in the displaying step, a reference height indicating the reference point is displayed in a line. Thereby, the user can clearly recognize the position of the reference point in the travel time graph and the residence time graph.

Further, as one aspect of the present invention, in the traffic information display method described above, in the displaying step, the speed / time composite graph displays the travel speed graph below a position corresponding to the reference point. The dwell time graph is displayed above the position corresponding to the reference point, and the travel speed graph is expressed in such a way that the travel speed is inversely proportional to the travel speed and the lower the travel speed, the dwell time graph is It is expressed so that the residence time becomes longer toward the upper side in proportion to the residence time.
As a result, the user can intuitively grasp the stay and smoothness of the traffic flow from the height of the graph in the speed time composite graph, and can easily recognize that the degree of congestion is higher as the graph extends upward. Become. Moreover, it becomes easy to look over the point where the traffic jam occurs depending on the height of the graph.

Further, as one aspect of the present invention, in the traffic information display method described above, in the step of displaying, the speed time composite graph displays the travel speed graph above a position corresponding to the reference point, The travel speed graph is expressed so that the travel speed increases in proportion to the travel speed as it goes upward.
Thereby, the user can easily recognize the traveling speed and the staying time state of the target road section.

Moreover, as one aspect of the present invention, in the traffic information display method described above, in the displaying step, the speed time composite graph displays the travel speed graph and the residence time graph in a smooth combination. And
This makes it possible to display a speed time composite graph that is easy for the user to see and recognize.

Further, as one aspect of the present invention, in the traffic information display method described above, in the displaying step, the travel speed graph in the speed / time composite graph is displayed in different colors according to the travel speed.
Thereby, the user can easily recognize the stagnation and smoothness of the traffic flow by the color in the graph.

Further, as one aspect of the present invention, in the traffic information display method described above, in the step of displaying, the position of the own apparatus in the road map image is displayed, and the own apparatus position is a predetermined position with respect to the target intersection. It is assumed that the speed time composite graph is displayed when
As a result, the user can obtain traffic information at an appropriate position. For example, the user can refer to route selection or route change during driving.

  The traffic information display device of the present invention is a traffic information display device that displays traffic information relating to a predetermined section on a road, and acquires or generates information on travel speed and travel time in the predetermined section as the traffic information. An acquisition means and a reference point corresponding to a predetermined reference speed set with respect to the traveling speed are provided in the display image, and a portion where the traveling speed in the predetermined section is faster than the reference speed is relative to the reference point. A travel speed graph showing the travel speed on one side is generated, and a location where the travel speed in the predetermined section is slower than the reference speed corresponds to the same direction as the travel speed graph or another direction with respect to the reference point A speed that combines the travel speed graph and the dwell time graph, a graph generating means for generating a dwell time graph showing the travel time of the section In which and a graph display means for displaying between synthetic chart.

  This makes it possible to visually display the traveling speed and staying time in a predetermined section on the road, and the user can intuitively understand the traffic situation such as staying and smoothness of traffic flow, occurrence of traffic jams and their degree. It becomes possible to recognize.

According to another aspect of the present invention, the traffic information display device includes a road map image generation unit that generates a road map image of the predetermined section, and the graph display unit includes a road of the road map image. The speed time composite graph is displayed along
This makes it possible to more intuitively understand the traveling speed and the staying time corresponding to the target road section in association with the road map.

  The traffic information providing apparatus of the present invention is a traffic information providing apparatus that provides traffic information related to a predetermined section on a road, and obtains or generates information on travel speed and travel time in the predetermined section as the traffic information. An acquisition means and a reference point corresponding to a predetermined reference speed set with respect to the traveling speed are provided in the display image, and a portion where the traveling speed in the predetermined section is faster than the reference speed is relative to the reference point. A travel speed graph showing the travel speed on one side is generated, and a location where the travel speed in the predetermined section is slower than the reference speed corresponds to the same direction as the travel speed graph or another direction with respect to the reference point Generate a dwell time graph showing the travel time of the section, and create a speed time composite graph that combines the travel speed graph and the dwell time graph A display information generating means for generating display information for Shimesuru, in which and information output means for outputting the display information.

  As a result, display information including a speed / time composite graph necessary for displaying traffic information can be provided to the display device. By displaying this information on the display device, the traveling speed and residence time in a predetermined section on the road can be visually determined. It is possible to display the information, and the user can intuitively recognize the traffic situation such as the stay and smoothness of the traffic flow, the occurrence and the degree of traffic congestion.

  ADVANTAGE OF THE INVENTION According to this invention, the traffic information display method and traffic information display which can display visually the driving speed and residence time in the predetermined area on a road, and a user can recognize a traffic condition intuitively. A device and a traffic information providing device can be provided.

  In the present embodiment, traffic information is displayed on a display terminal such as a car navigation device using probe data such as travel trajectory data, travel time data, and speed data obtained by traveling on an actual road with a probe car. A description will be given of a configuration example of a traffic information display system to be displayed.

  FIG. 1 is a diagram showing a schematic configuration of a probe information collection system according to the first embodiment of the present invention. This probe information collection system is mounted on a probe car and collects probe data (traveling track data, travel time data, speed data, etc.) and an on-vehicle probe device 10 disposed on a road and close to the probe on-vehicle device 10. And a beacon 20 that receives probe data by performing road-to-vehicle communication that is distance wireless communication. Also, an administrator system 21 that manages each beacon 20 installed at a plurality of locations, an uplink collection / distribution center 22 that collects and distributes probe data of each administrator system 21, and an uplink collection / distribution center 22 A traffic information generating device (traffic information providing device) 30 that generates traffic information related to the traffic speed and the degree of traffic congestion due to travel time, etc. based on the probe data distributed from and provides the generated traffic information. In addition, probe data can be directly transmitted from the probe vehicle-mounted device 10 to the traffic information generating device 30 via a wireless communication line 23 such as a mobile communication network.

  Furthermore, an information utilization device (display terminal) 40 that displays and uses traffic information and route information provided from the traffic information generation device 30 is provided. In this embodiment, in this information utilization apparatus 40, the traveling speed and staying time (travel time per unit distance) of a predetermined section on the road are displayed in a graph based on the provided traffic information, and a driver or the like is displayed. Enable users to recognize traffic conditions intuitively and easily.

  FIG. 2 is a block diagram illustrating a configuration example of the traffic information generation apparatus according to the present embodiment. The traffic information generating device 30 includes a probe data receiving unit 31 that receives probe data (data such as a travel locus, travel time, and travel speed) collected by each probe car, and an object of the data based on the received probe data. A road section identifying unit 32 that identifies a road section to be, a travel speed / dwell time generating unit 33 that generates travel speed and dwell time (travel time) information as traffic information in the identified road section, and a road section And a traffic information providing unit 34 that provides traffic information including travel speed and staying time in the road section.

  The traffic information may be provided by providing road-to-vehicle communication via the beacon 20 to the in-vehicle information utilization device for information on the road around the installation location of the beacon 20 or by the user via the mobile communication network. You may make it provide the information regarding the designated area and the road around the present position of a user. The travel speed / dwell time generator 33 may generate both travel speed and dwell time data for each section, or when the travel speed is low (for example, less than 5 kilometers per hour). Generates only dwell time data without generating travel speed data, and generates only travel speed data without generating dwell time data when the travel speed is not low (for example, 5 km / h or more). You may do it.

  FIG. 3 is a block diagram illustrating a configuration example of the information utilization apparatus according to the present embodiment. Here, an example of an information utilization device applied to a car navigation device is shown. As the information utilization device (display terminal), a mobile information device such as a mobile phone device or a PDA can be used in addition to the car navigation device.

  The information utilization device 40 includes a traffic information receiving unit 41 that receives traffic information provided from the traffic information generating device 30, a map database 42 that stores map information such as roads, and traffic information that is graphed based on the received traffic information. An image generation unit 45 that generates a display image including an image display device 46 such as a liquid crystal display device that performs image display, a graph display control unit 47 that performs image display control, and a navigation control unit (not shown). Composed. The image generation unit 45 includes a graph generation unit 43 that generates a graph of traffic information regarding travel speed and residence time, and a road map image generation unit 44 that generates a road map image. Here, the graph generation unit of the image generation unit 45 has a function of a graph generation unit, and the road map image generation unit 44 of the image generation unit 45 has a function of a road map image generation unit, and the graph display control unit 47, The image generation unit 45 and the image display device 46 have a function of graph display means.

  The graph display control unit 47 determines whether or not to display a graph of the traveling speed and the staying time on the road map image based on the travel locus, the traveling speed, and the staying time (traveling time) data acquired from the traffic information generating device 30. Control. For example, the graph display control unit 47, for example, when the vehicle position becomes a predetermined position with respect to the target intersection, for example, a predetermined distance before the target intersection, or an intersection just before the target intersection or a predetermined distance before this intersection. For example, a traffic information graph indicating the traveling speed and staying time is displayed for the road section of the route ahead from the target intersection. Further, the type of graph to be created may be changed in accordance with the setting by the user or the like. For example, it is possible to selectively display not only a graph in which traveling speed and residence time are combined, but also a graph of traveling speed alone, a graph of residence time alone, and the like.

  Also, regarding the travel speed graph, a graph whose height is inversely proportional to the travel speed (indicating that the higher the graph, the slower the graph), or a graph whose graph height is proportional to the travel speed (the higher the graph, the faster the graph is Can be selectively displayed. Further, the residence time may be displayed with a numerical value, a bar length, or the like together with the graph. In this case, it may be possible to select in which direction the display mode of the residence time is set with respect to the graph.

  The image generation unit 45 generates display image data by combining the graph image generated by the graph generation unit 43 in correspondence with the specific road section of the road map image generated by the road map image generation unit 44 and outputs the display image data. . Then, the image display device 46 displays an image including the traffic information graph. For example, a graph of traveling speed and staying time is displayed along a specific road section of a road map image representing a road and a route by three-dimensional display. Display examples of images including these traffic information will be described later.

  FIG. 4 is a schematic explanatory diagram of traffic information display according to the embodiment of the present invention. In the present embodiment, traffic information related to the degree of congestion on the road is displayed by a speed / time composite graph 200 in which travel speed and residence time are combined and displayed. Here, the speed / time composite graph 200 has a target road section (distance) on the horizontal axis and a reference height 203 corresponding to a predetermined reference speed (for example, 5 km / h) as a reference point (threshold). Where the travel speed is faster than the reference speed for each unit section and the traffic flows smoothly, a travel speed graph 201 that is inversely proportional to the travel speed is displayed in a portion below the reference height 203, and the travel speed is the reference speed. The later and congested portion is visually expressed by displaying a residence time graph 202 proportional to the residence time in a portion above the reference height 203. In this case, the residence time graph 202 is expressed so that the time becomes longer as it becomes higher than the reference height 203, and the traveling speed graph 201 is expressed so that the traveling speed becomes faster as it becomes lower than the reference height 203. Yes.

  The reference height 203 is a border line indicating a constant reference speed. For example, when the reference speed is 5 kilometers per hour, the traveling speed is a graph below the reference height 203 if the traveling speed is 5 kilometers or more per hour. When the traveling speed is less than 5 kilometers per hour, the residence time is displayed in a graph above the reference height 203. Further, in the part of the residence time graph 202, the total residence time (waiting time) 204 obtained by adding the residence time for each unit section may be displayed as a numerical value. The lower end (the end portion on the higher speed side) of the travel speed graph 201 is set to a predetermined speed such as a legal speed or the maximum speed of the section.

  When displaying the speed time composite graph 200 in the information utilization device 40, the graph display control unit 47 has no travel speed data based on the travel speed and travel time traffic information acquired from the traffic information generation device 30. Calculates the travel speed from the distance information of the travel locus data and the travel time data, and determines whether the travel speed for each unit section is slower than the reference speed. When the travel speed is faster than the reference speed, the graph generation unit 43 of the image generation unit 45 generates a travel speed graph for the section. On the other hand, when the travel speed is slower than the reference speed, if there is no travel time data for the section, the travel time (dwell time) is calculated from the distance information of the travel locus data and the travel speed data. The graph generation unit 43 generates a residence time graph indicating the residence time for each unit section. And the speed time synthetic | combination graph is produced | generated by synthesize | combining so that the driving | running | working speed graph produced | generated by the graph production | generation part 43 and the residence time graph may be combined smoothly. Next, the road map image generated by the road map image generation unit 44 of the image generation unit 45 and the generated speed time synthesis graph are combined, and the combined display image data is output to the image display device 46.

  As a modification of the configuration for creating and displaying the display image data including the graph in the information utilization device 40, the traffic information generation device 30 creates and provides the display image data including the traffic information graph, and uses the information. A configuration in which the provided data is displayed on the display unit in the device 40 is also possible.

  In this way, the travel speed graph 201 is displayed, and when the travel speed falls below a predetermined reference speed, the residence time graph 202 representing the residence time (travel time) per unit distance is added to the travel speed graph 201. By combining them so as to form a smooth curve and expressing them as a staying image, the waiting time and traffic jam at the intersection can be expressed quantitatively. Thereby, the user who sees this traffic information display can intuitively grasp the stay and smoothness of the traffic flow by the height (area) of the graph. In the present embodiment, the smoother the graph, the lower the graph, and the higher the traffic, the higher the graph.

  Further, in the speed-time composite graph 200, the degree of traffic flow is displayed so that it is displayed in a more bluish color scheme when the vehicle speed is close to the legal speed and the vehicle flow is smooth, and in a reddish color scheme in the case of low speed or traffic jam The coloration may be displayed in different colors. As a result, the stagnation and smoothness of traffic flow can be intuitively grasped by the height (area) and color of the graph.

  FIG. 5 is a diagram showing a first display example of the speed / time composition graph according to the embodiment of the present invention. In the first display example, when the road map ahead of the travel route is three-dimensionally displayed on the display unit of the car navigation apparatus, a speed time composite graph is displayed along the route on the road in the traveling direction. In this case, the speed time composite graph 200 is displayed along the travel route on the road 211 together with the road 211 and the vehicle position mark 212 displayed in three dimensions, and stays at a place where the travel speed is slow and stays at an intersection or the like. The time 204 is displayed numerically. Thus, it can be seen that it takes 4.5 minutes to make a right turn at the next intersection, and it takes 1 minute to go straight after the right turn and go straight through the next intersection.

  FIG. 6 is a diagram showing a second display example of the speed / time composition graph according to the embodiment of the present invention. The second display example is a modification of the first display example, in which an auxiliary line indicating the reference height 203 of the reference speed is added to the speed / time composite graph 200. By displaying the reference height 203 in this manner, the travel speed display area (the travel speed graph 201 area) and the stay time display area (the stay time graph 202 area) in the speed / time composite graph 200 are separated. Become clear.

  FIG. 7 is a diagram showing a third display example of the speed / time composition graph according to the embodiment of the present invention. In the third display example, a speed / time composite graph is displayed for a plurality of routes. In this case, with the road 211 and the vehicle position mark 212 displayed three-dimensionally, the speed / time composite graph 221 in the first route that turns right at the first intersection, and the second that goes straight at the first intersection and turns right at the next intersection And a speed-time composite graph 222 in the path of (2) are displayed. By displaying the speed / time composite graph of a plurality of routes in this way, the user can select a more suitable route by comparing the right turn cost, passage time, passage speed, and the like of each route.

  FIG. 8 is a diagram showing a fourth display example of the speed / time composition graph according to the embodiment of the present invention. The fourth display example is a two-dimensional display of speed-time composite graphs related to a plurality of routes. In this case, the horizontal axis is the travel distance from the departure point (S) to the arrival point (G), and the speed / time composite graphs 231 and 232 for each of the plurality of routes are displayed side by side in the vertical direction. Accordingly, the user can intuitively compare and recognize the travel distance, travel speed, travel time, and traffic jam section of each route visually.

  FIG. 9 is a diagram showing a fifth display example of the speed / time composition graph according to the embodiment of the present invention. The fifth display example displays a travel speed graph 241 indicating the travel speed along a route on the road and a stay time graph 242 in which the stay time (waiting time) is represented by a bar graph. In this case, the residence time graph 242 is displayed so as to extend to the side of the traveling speed graph 241, and the residence time 204 is displayed numerically in the vicinity of the residence time graph 242. The travel speed graph 241 is configured such that the height of the graph is proportional to the travel speed, that is, the higher the travel speed, the higher the graph height.

  FIG. 10 is a diagram showing a sixth display example of the speed / time composition graph according to the embodiment of the present invention, and FIG. 11 is a diagram showing a seventh display example of the speed / time composition graph according to the embodiment of the present invention. The sixth display example and the seventh display example are modifications of the fifth display example. In the sixth display example shown in FIG. 10, the residence time graph 242 is displayed so as to extend upward in the same direction as the travel speed graph 241. In the seventh display example shown in FIG. 11, the residence time graph 242 is displayed so as to extend downward in the direction opposite to the travel speed graph 241. Also in the fifth to seventh display examples, the stay and smoothness of the traffic flow can be intuitively recognized by the graph.

  As described above, in the present embodiment, a graph representing the traveling speed of a portion faster than the reference speed and a graph representing a residence time of a portion slower than the reference speed are combined to display a speed / time composition graph smoothly connected. . At this time, as in the above display example, a graph in which the height of the graph is inversely proportional to the traveling speed, a graph in which the height of the graph is proportional to the traveling speed, the direction of the graph of the traveling speed and the residence time, etc. are arbitrarily selected. It is also possible to set.

  FIG. 12 is a block diagram showing a configuration of a probe information collection system according to the second embodiment of the present invention. 2nd Embodiment shows the structure of the link ID system which adds a road number for every road section, and transmits / receives traffic information.

  A probe vehicle-mounted device 100 that is a probe data collection device includes a host vehicle position determination unit 101 that determines the host vehicle position, and a travel track storage unit 102 that stores travel track data including information such as the position and time the vehicle has traveled. And a data transmission unit 104 that encodes and transmits probe data including travel locus (travel route) and travel speed or travel time information generated based on the accumulated travel locus data and map data in the map database 103. Is provided.

  The traffic information generating apparatus 110 includes a data receiving unit 111 that receives and decodes probe data, a road section specifying unit 113 that specifies a target road section based on the acquired probe data and map data in the map database 112, A traffic information generating unit that generates traffic information including travel speed and / or travel time for each section of the target road number using the probe data specifying the road section and the road number data of the road number database 114 115 and a data transmission unit 116 that encodes and transmits traffic information distribution data based on the generated traffic information.

  The information utilization apparatus 120 described above using the data receiving unit 121 that receives and decodes the traffic information distribution data, the acquired traffic information distribution data, the map data of the map database 122, and the road number data of the road number database 123 described above. A processing unit 124 that performs processing for generating display image data including a speed-time composite graph, and a display unit 125 that displays an image including the speed-time composite graph.

  In this configuration, the probe in-vehicle device 100 transmits probe data related to the travel locus traveled by the probe car on which the device itself is mounted to the traffic information generating device 110. In the traffic information generation device 110, after decoding the received probe data, it is determined which road the probe car has passed based on the probe data, and compared with the map data, so that the target road section Identify the location. Then, road number data of the road section corresponding to the data to be transmitted is added, and traffic information including at least one of the road number data and travel speed data and travel time data is encoded to generate traffic information distribution data. And distributed to the information utilization apparatus 120.

  In the information utilization device 120, after decoding the received traffic information distribution data, the target road section of the traffic information distribution data is extracted, and the position of the device on the digital map is determined from the road number data and the map data. Identify. Then, for the route set by the user, the road ahead of the current position, etc., the above-described speed / time composite graph is generated based on the acquired traffic information distribution data, and is combined with the road map image to generate display image data. . Next, a road map image including the speed / time composite graph is displayed on the display unit.

  Even in the configuration of such a link ID type probe information collection system, the user can combine traffic speed and residence time with traffic conditions such as stay and smoothness of traffic flow on roads and intersections on a desired route. Can be intuitively recognized.

  FIG. 13 is a block diagram showing a configuration of a probe information collection system according to the third embodiment of the present invention. The third embodiment has a configuration of a position reference method in which position information such as latitude / longitude information is added for each road section or traffic information is transmitted and received by adding shape information such as roads including the position information. Show. The configuration of the on-vehicle probe device 100 is the same as that of the second embodiment in FIG.

  The traffic information generating device 130 includes a data receiving unit 131 that receives and decodes probe data, a road segment specifying unit 133 that specifies a target road segment based on the acquired probe data and the map data of the map database 132, A position reference information generating unit 134 that generates position reference information such as position information based on latitude and longitude using the map data of the map database 132 and shape information of a road or the like including the position information; probe data specifying a road section; A traffic information generation unit 135 that generates traffic information including travel speed and travel time, or one of these information for each target road section using the position reference information generated by the position reference information generation unit 134; A data transmission unit 136 that encodes and transmits traffic information distribution data based on the traffic information.

  The information utilization device 140 receives the traffic information distribution data and decodes it, and the display image data including the speed / time composite graph described above using the acquired traffic information distribution data and the map data of the map database 142. Is provided with a processing unit 144 that performs processing for generating the image and a display unit 145 that displays an image including the speed-time composite graph.

  In this configuration, the traffic information generation device 130 performs a decoding process on the received probe data, determines on which road the probe car has passed based on the probe data, and compares it with the map data. Identify the location of the road section. Then, position reference information of a road section corresponding to data to be transmitted is added, and traffic information including at least one of the position reference information and travel speed data and travel time data is encoded to generate traffic information distribution data. And distributed to the information utilization apparatus 140.

  In the information utilization apparatus 140, after the received traffic information distribution data is decoded, the target road section of the traffic information distribution data is extracted from the position reference information, and the map matching process between the position reference information and the map data is performed. To identify the location of your device on the digital map. Then, for the route set by the user, the road ahead of the current position, etc., the above-described speed / time composite graph is generated based on the acquired traffic information distribution data, and is combined with the road map image to generate display image data. . Next, a road map image including the speed / time composite graph is displayed on the display unit.

  Also in the configuration of such a position reference type probe information collection system, as in the second embodiment, the user can check traffic conditions such as staying and smoothness of traffic flow on roads and intersections on a desired route. It can be intuitively recognized by a composite graph of travel speed and residence time.

  In the second and third embodiments, the traffic information generation devices 110 and 130 generate display image data including the speed / time composite graph, and the information utilization devices 120 and 140 display the map of the own device. The position information may be specified and displayed, or the display information including the speed / time composite graph is generated in the traffic information generation devices 110 and 130 and only the display is performed in the information utilization devices 120 and 140. Configuration is also possible.

  INDUSTRIAL APPLICABILITY The present invention can visually display a traveling speed and a staying time in a predetermined section on a road, and has an effect that enables a user to intuitively recognize a traffic situation. This is useful for a traffic information display method, a traffic information display device, a traffic information providing device, etc.

The figure which shows schematic structure of the probe information collection system which concerns on embodiment of this invention. The block diagram which shows the structural example of the traffic information generation apparatus which concerns on this embodiment The block diagram which shows the structural example of the information utilization apparatus which concerns on this embodiment Schematic explanatory diagram of traffic information display according to an embodiment of the present invention The figure which shows the 1st display example of the speed time synthetic | combination graph which concerns on embodiment of this invention. The figure which shows the 2nd example of a display of the speed time synthetic | combination graph which concerns on embodiment of this invention. The figure which shows the 3rd display example of the speed time synthetic | combination graph which concerns on embodiment of this invention. The figure which shows the 4th example of a display of the speed time synthetic | combination graph which concerns on embodiment of this invention. The figure which shows the 5th example of a display of the speed time synthetic | combination graph which concerns on embodiment of this invention. The figure which shows the 6th example of a display of the speed time synthetic | combination graph which concerns on embodiment of this invention. The figure which shows the 7th example of a display of the speed time synthetic | combination graph which concerns on embodiment of this invention. The block diagram which shows the structure of the probe information collection system which concerns on the 2nd Embodiment of this invention. The block diagram which shows the structure of the probe information collection system which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

10, 100 Probe in-vehicle device 30, 110, 130 Traffic information generating device (traffic information providing device)
31 Probe data receiving unit 32 Road section specifying unit 33 Traveling speed / dwelling time generating unit 34 Traffic information providing unit 40, 120, 140 Information utilization device (display terminal)
DESCRIPTION OF SYMBOLS 41 Traffic information receiving part 42 Map database 43 Graph generation part 44 Road map image generation part 45 Image generation part 46 Image display apparatus 47 Graph display control part 200 Speed time synthetic | combination graph 201 Traveling speed graph 202 Residence time graph 203 Reference height (reference | standard) speed)
204 Residence time

Claims (13)

A traffic information display method for displaying traffic information about a predetermined section on a road,
Obtaining or generating information on travel speed and travel time in the predetermined section as the traffic information;
Providing a reference point corresponding to a predetermined reference speed set for the travel speed in a display image;
Generating a traveling speed graph in which the traveling speed is indicated on one side with respect to the reference point for a portion where the traveling speed in the predetermined section is faster than the reference speed;
Generating a dwell time graph in which the travel time of the corresponding section is indicated in the same direction as the travel speed graph or in other directions with respect to the reference point for a portion where the travel speed in the predetermined section is slower than the reference speed;
A traffic information display method comprising: displaying on a display means a speed time composite graph obtained by combining the travel speed graph and the residence time graph. The traffic information display method according to claim 1,
In the step of generating the dwell time graph, traffic information for generating the dwell time graph on the other side opposite to the travel speed graph with respect to the reference point at a location where the running speed in the predetermined section is slower than the reference speed. Display method. The traffic information display method according to claim 1,
Generating a road map image of the predetermined section;
The traffic information display method of displaying the speed time composite graph along the road of the road map image in the displaying step. The traffic information display method according to claim 1,
In the displaying step, the traffic information display method for numerically displaying the residence time of the corresponding section together with the residence time graph. The traffic information display method according to claim 1,
In the displaying step, a traffic information display method for displaying a reference height indicating the reference point in a line. The traffic information display method according to claim 1,
In the displaying step, the speed time composite graph displays the travel speed graph below the position corresponding to the reference point, and displays the dwell time graph above the position corresponding to the reference point. The travel speed graph is expressed in such a way that the travel speed is increased in the lower direction in inverse proportion to the travel speed, and the residence time graph is expressed in such a manner that the residence time is increased in the upper direction in proportion to the residence time. Display method. The traffic information display method according to claim 1,
In the displaying step, the speed / time composite graph displays the travel speed graph above the position corresponding to the reference point, and the travel speed graph is increased in proportion to the travel speed. Traffic information display method to express in. The traffic information display method according to claim 1,
In the displaying step, the speed time composite graph is a traffic information display method in which the travel speed graph and the dwell time graph are smoothly combined and displayed. The traffic information display method according to claim 1,
In the displaying step, the travel speed graph in the speed / time composite graph is displayed in different colors according to the travel speed. The traffic information display method according to claim 3,
The traffic information display method of displaying the speed-time composite graph when displaying the position of the own apparatus in the road map image and displaying the position of the own apparatus at a predetermined position with respect to the target intersection. A traffic information display device that displays traffic information about a predetermined section on a road,
Traffic information acquisition means for acquiring or generating information on travel speed and travel time in the predetermined section as the traffic information;
A reference point corresponding to a predetermined reference speed set for the travel speed is provided in the display image, and a portion where the travel speed in the predetermined section is faster than the reference speed is on one side with respect to the reference point. A travel speed graph showing a travel speed is generated, and for a portion where the travel speed in the predetermined section is slower than the reference speed, the travel time of the corresponding section in the same direction as the travel speed graph or another direction with respect to the reference point A graph generating means for generating a residence time graph in which
A traffic information display device comprising: graph display means for displaying a speed time composite graph obtained by combining the travel speed graph and the residence time graph. The traffic information display device according to claim 11,
Road map image generation means for generating a road map image of the predetermined section;
The said graph display means is a traffic information display apparatus which displays the said speed time synthetic | combination graph along the road of the said road map image. A traffic information providing device that provides traffic information about a predetermined section on a road,
Traffic information acquisition means for acquiring or generating information on travel speed and travel time in the predetermined section as the traffic information;
A reference point corresponding to a predetermined reference speed set for the travel speed is provided in the display image, and a portion where the travel speed in the predetermined section is faster than the reference speed is on one side with respect to the reference point. A travel speed graph showing a travel speed is generated, and for a portion where the travel speed in the predetermined section is slower than the reference speed, the travel time of the corresponding section in the same direction as the travel speed graph or another direction with respect to the reference point A display information generating means for generating display information for generating a dwell time graph in which the travel speed graph and the dwell time graph are combined to generate a dwell time graph.
A traffic information providing apparatus comprising: information output means for outputting the display information.

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