JP5447144B2 - Start / end traffic volume calculation device, traffic simulator, and start / end traffic volume calculation method - Google Patents

Description

  The present invention relates to a start / end traffic calculation device that calculates the start / end traffic of a vehicle, a traffic simulator that uses the start / end traffic calculated by the start / end traffic calculation device, and a start / end traffic calculation method.

  Expectations for traffic simulators are increasing as a means of evaluating the impact of traffic regulations in advance, and various technological developments are being carried out. Such a traffic simulator is given as input data traffic information such as start / end traffic volume (for example, OD traffic volume) including vehicle start point information and end point information, vehicle travel speed, acceleration / deceleration characteristics, and the like. It is handled. The traffic simulator contains a vehicle movement model, that is, a calculation formula that simulates the behavior of the vehicle in advance, and by applying the above input data to the calculation formula, an evaluation value of the required traffic state quantity is obtained. Output.

  Conventionally, as a method for obtaining the OD traffic volume, for example, an identification code of a passing vehicle is collected by a road beacon, and between the ODs including the start point and the end point of the vehicle based on the identification code collected by the road beacon and the position information of the road beacon Specify the travel route. And the inter-OD travel route determination apparatus which can obtain | require OD traffic by statistically processing the travel route between OD for every vehicle is disclosed (refer patent document 1).

JP 2002-329285 A

  However, in the apparatus of Patent Document 1, it is assumed that a road device such as an optical beacon is installed. That is, in the general road network, for example, an optical beacon is installed in the vicinity of an intersection, but an on-road device that can acquire a vehicle identification code such as an optical beacon is not installed in an expressway. For this reason, the OD traffic volume based on the vehicle passing through the expressway could not be obtained conventionally. In addition, optical beacons and information collected from optical beacons are managed for each prefecture. The identification code of the vehicle collected by the optical beacon includes information on the location where the identification code was assigned, so it can be seen that the vehicle came from another prefecture, but it is traveling in another prefecture. In order to know the trajectory, information collected by optical beacons in other prefectures is required. However, if data is exchanged with other prefectures, a large amount of data needs to be transmitted / received and stored, which requires a great deal of cost. On the other hand, there is a strong demand for simulating the impact on roads due to traffic restrictions on expressways, and it has been desired to calculate the OD traffic volume (start / end traffic volume) of the entire road network including the expressway.

  The present invention has been made in view of such circumstances, and is calculated by the start / end point traffic calculation device capable of calculating the start / end point traffic volume of the road network including the expressway, and the start / end point traffic amount calculation device. It is an object of the present invention to provide a traffic simulator and a start / end traffic calculation method using start / end traffic.

  According to a first aspect of the present invention, there is provided a traffic calculation apparatus for starting and ending traffic, a first road network in which a plurality of road devices for acquiring vehicle specific information are installed, and the road device connected to the first road network at a plurality of points. An apparatus for calculating a starting and ending traffic volume between a starting point and an ending point of a vehicle in a road network including a second road network that is not installed, wherein the second road network is connected to the first road network Based on the traffic information acquisition means for acquiring the traffic volume on the second road network between the first point and the second point, and the specific information of the plurality of vehicles acquired by the road device, the first point is started. Starting and ending point specifying means for specifying a plurality of ending points in the first road network of the vehicle passing through the second road network and the second point as first road network points, and starting from the first point Of all the vehicles passing through the second road network and the second point, the end point is the Based on the ratio calculation means for calculating the ratio of the vehicle that is the end point specified by the end point specification means, the traffic volume acquired by the traffic volume acquisition means and the ratio calculated by the ratio calculation means, the first point, the second point And a start / end point traffic volume calculating means for calculating a start / end point traffic volume starting from any one of the points and one of the plurality of points in the first road network.

  According to a second aspect of the present invention, in the first aspect, the origin / destination traffic volume calculation unit is configured such that the origin / destination specifying unit starts from the first point based on unique information of a plurality of vehicles acquired by the road device. End point specifying means for specifying a plurality of end points in the first road network of the vehicle passing through the second road network and the second point, and the ratio calculating means starting from the first point and the second point An end point ratio calculating unit that calculates an end point ratio of a vehicle whose end point is the end point specified by the end point specifying unit among all vehicles passing through the road network and the second point; Comprises first traffic volume acquisition means for acquiring a first traffic volume of a vehicle traveling from the first location to the second location via the second road network, and the start / end traffic volume calculation means comprises: Before the first traffic volume acquired by the first traffic volume acquisition means By multiplying the endpoint ratio, characterized in that the said first point is arranged to calculate a first point end point traffic to the end point.

  According to a third aspect of the present invention, in the second aspect, the starting and ending traffic volume calculating device is configured such that, when a predetermined number or more of vehicles have the same point as an extinction point, the point is specified as the ending point. It is characterized by being.

According to a fourth aspect of the present invention, in the second or third aspect, the start / end point traffic volume calculating device is specified by the end point specifying means from the second point based on the specific information of the plurality of vehicles acquired by the road device comprising a temporary second point end point traffic amount calculating means for calculating a provisional second point end point traffic to the end point, the electromotive endpoint traffic amount calculating means, the provisional second point end point traffic volume the first point end point traffic And the second point end point traffic volume from the second point to the end point is calculated.

  The start / end point traffic volume calculating device according to a fifth aspect of the present invention is the device according to any one of the second to fourth aspects, wherein the start / end point traffic amount calculating means calculates the first point end point traffic amount from the first traffic amount. The first point second point traffic volume from the first point to the second point is calculated by subtracting the total value for each end point.

  The origin / endpoint traffic volume calculation device according to a sixth aspect of the present invention is the traffic calculation device according to any one of the second aspect to the fifth aspect, wherein the ratio calculation means starts from the end point specified by the end point specification means, and uses the second point as the end point. Among the vehicles, the vehicle starting point ratio calculating means for calculating the starting point ratio of the vehicle for each starting point, the traffic volume acquiring means from the second point to the first point via the second road network 2nd traffic volume acquisition means which acquires the 2nd traffic volume of the vehicle which drive | works, The said origin / destination traffic volume calculation means multiplies the said origin ratio to the 2nd traffic volume acquired by the said 2nd traffic volume acquisition means. The starting point first point traffic volume from the starting point to the first point is calculated.

The origin / endpoint traffic volume calculation device according to a seventh aspect of the present invention is the provisional origin second point traffic volume from the origin to the second point based on the specific information of the plurality of vehicles acquired by the road device in the sixth aspect. Provisional starting point second point traffic volume calculating means for calculating the starting point / ending point traffic volume subtracting the starting point first point traffic volume from the provisional starting point second point traffic volume and subtracting the second from the starting point. The starting point second point traffic volume to the point is calculated.

  In the sixth or seventh invention, the starting / ending point traffic volume calculating device according to an eighth aspect of the present invention is the sum of the starting point / end point traffic calculating unit from the second traffic amount to the starting point / first point traffic amount for each starting point. And the second point first point traffic volume from the second point to the first point is calculated.

  A traffic simulator according to a ninth aspect of the invention is characterized in that the start / end point traffic volume calculated by the start / end point traffic volume calculating device according to any one of the foregoing inventions is used as input data.

The starting and ending traffic volume calculation method according to a tenth aspect of the present invention is a first road network in which a plurality of road devices for acquiring vehicle specific information are installed, and the road device is connected to the first road network at a plurality of points. A start / end point traffic volume calculation method by a start / end point traffic amount calculating device for calculating a start / end point traffic volume between a start point and an end point of a vehicle in a road network including a second road network that is not installed, A traffic volume acquisition means for acquiring a traffic volume in the second road network between a first point and a second point where the road network is connected to the first road network; based on the unique information of the vehicle, causing the end point of said first road network of the vehicle via a starting point the first point and the second road network and the second point as the first road in the network point a step of ending identifying means are a plurality particular, before the starting point of the first point Of all vehicles passing through the second road network and the second point, the method comprising the ratio of the vehicle which is the end point of the end point has been specified by the electromotive end point specifying means the ratio calculating means calculates, acquired traffic and Based on the calculated ratio, the starting and ending traffic volume that starts and ends at any one of the first point, the second point, and one of the plurality of points in the first road network is set as the starting and ending traffic volume. And a step of calculating by the traffic volume calculating means .

  In the first invention and the tenth invention, the second road network (for example, a highway) is connected between the first point X and the second point Y where the second road network (for example, a general road) is connected. The traffic volume P on the second road network is acquired. For example, the first point X is an entrance / exit of an expressway outside the simulation target area (for example, outside the target prefecture), and the second point Y is an expressway in the simulation target area (for example, the target prefecture). It is the entrance and exit. The traffic volume P on the expressway between the first point X and the second point Y can be obtained from, for example, the number of vehicles that have passed ETC (Electronic Toll Collection System), the ETC loading rate, and the like.

  Based on specific information (for example, vehicle identification code) of a plurality of vehicles acquired by a road device (for example, an optical beacon), a second road network (for example, a highway) and the like starting from the first point X, and A plurality of end points in the first road network of the vehicle passing through the second point Y are specified as points in the first road network. For example, the end points are D1, D2, and D3. The number of end points is not limited to three. In this case, the optical beacons corresponding to the first point X and the second point Y may be, for example, a vehicle that flows into or out of the highway out of the optical beacons around the entrance / exit of the highway. A high optical beacon is set in advance. The end point in the first road network is identified by, for example, the first point in the target area (prefecture) where the first uplink is an optical beacon near the second point and the vehicle identification code is assigned. The uplink information of the vehicle that is the prefecture where X exists can be extracted, and the position of the optical beacon that the vehicle of the vehicle identification code has passed last can be set as the end points D1 to D3 (disappearance points).

  Of all vehicles starting from the first point X and passing through the second road network (for example, an expressway) and the second point Y, the end point of the vehicle identified as the first road network point Calculate the percentage. For example, if the number of all vehicles is M and the number of vehicles whose end point is D1 is m1, the ratio α1 of vehicles whose end point is D1 is calculated by α1 = m1 / M. Similarly, the vehicle ratios α2 and α3 having the end points D2 and D3 are calculated. Then, based on the acquired traffic volume P and the calculated ratios α1 to α3, any one of the first point X, the second point Y, and one of the plurality of first road network points D1 to D3. The starting and ending traffic volume with the starting and ending points is calculated. That is, the starting and ending traffic volume between the first point X and the first road network point, the starting and ending traffic volume between the first point X and the second point Y, the second point and the first road network Calculate the starting and ending traffic volume between the inside points.

  For example, the starting and ending traffic volume with the first point X as the starting point and the ending point as D1 can be calculated as α1 × P. Further, if the starting and ending traffic volume with the starting point D2 as the starting point and the end point D1 obtained based on the uplink information is Q1, the starting and ending traffic volume Q1 includes the first point X and the second point Y. Since vehicles flowing into a second road network (for example, an expressway, etc.) from a point in between are also included, true start / end traffic with the second point Y as the start point and the end point as D1 is excluded to exclude these vehicles The amount is calculated by {Q1-α1 × P}. Further, when the traffic volume P starting from the first point X and ending at the second point Y is larger than the traffic volume starting from the first point X and ending from D1 to D3, the first point X and the second point The traffic volume between Y and Y can be calculated by {P− (α1 + α2 + α3) × P}. As a result, even if the road network includes an expressway or the like on which no road device capable of acquiring the vehicle identification code is installed, that is, when the vehicle travels using the expressway or the like, the desired start End point traffic volume can be obtained, OD traffic volume (starting / ending point traffic volume) of the entire road network including the expressway can be calculated, and the impact on general roads due to traffic restrictions on the expressway can be simulated. Is possible.

  In the second invention, based on the specific information of the plurality of vehicles acquired by the road device, the first point X is the starting point and the second road network (for example, an expressway) and the second point Y are routed. A plurality of end points (for example, D1 to D3) in the first road network of the vehicle are specified. Of all the vehicles M starting from the first point X and passing through the second road network and the second point Y, the end point ratios α1 to α3 of the end points D1 to D3 whose end points are specified are calculated for each end point. To do. The first traffic volume P1 of the vehicle traveling from the first point X to the second point Y is acquired via a second road network (for example, an expressway). The acquired first traffic amount P1 is multiplied by the end point ratios α1 to α3 to calculate the first point end point traffic volume from the first point X to the end points D1 to D3. For example, the traffic volume between the first point X and the end point D1 is calculated as α1 × P1. As a result, even when an expressway or the like exists between the starting point and the ending point, the starting and ending traffic volume can be obtained, and the OD traffic volume (starting and ending traffic volume) of the entire road network including the highway can be calculated. It is possible to simulate the impact on roads due to traffic restrictions on expressways.

  In the third invention, when a predetermined number or more of vehicles have the same point as the disappearance point, the point is specified as the end point. The predetermined number can be set to a different value depending on the day of the week, the time zone, and the like. Thus, by omitting (ignoring) routes with a small number of unique information, ie, uplink information, for example, a small number of vehicles that do not use a highway are excluded, and the traffic volume is calculated accurately. be able to.

  In the fourth invention, the second point end point traffic volumes Q1 to Q3 from the second point Y to the specified end points D1 to D3 are calculated. The second point end point traffic volumes Q1 to Q3 can be obtained from the uplink information. The second point end point traffic volume from the second point Y to the end points D1 to D3 is calculated by subtracting the first point end point traffic volume from the second point end point traffic volume. For example, the starting and ending traffic volume Q1 obtained from the uplink information includes vehicles flowing into a second road network (for example, a highway) from a point between the first point X and the second point Y. Therefore, in order to exclude these vehicles, the true start / end traffic volume with the second point Y as the start point and the end point as D1 is calculated by {Q1-α1 × P}. Similarly, the true starting and ending traffic volumes having the second point Y as the starting point and the ending points as D2 and D3 can be calculated by {Q2-α2 × P} and {Q3-α3 × P}, respectively. As a result, the OD traffic volume (starting / ending traffic volume) of the entire road network including the expressway can be calculated, and it is possible to simulate the influence on general roads due to traffic restrictions on the expressway.

  In the fifth invention, the first point second point traffic volume from the first point X to the second point Y is subtracted from the first traffic amount P1 for each end point of the first point end point traffic. calculate. For example, the first traffic volume P1 starting at the first point X and ending at the second point Y is greater than the traffic volume {(α1 + α2 + α3) × P1} having the first point X as the starting point and D1 to D3 as the end points. The traffic volume between the first point X and the second point Y can be calculated by {P1- (α1 + α2 + α3) × P1}. Since the first traffic volume P1 includes all vehicles having the second point Y as the end point and vehicles having the end points D1 to D3 as the end points, by excluding vehicles having the end points D1 to D3 as the end points, The starting and ending traffic volume with the second point Y as the end point can be obtained.

  In the sixth aspect of the invention, the vehicle starting point ratios β1 to β3 for each starting point are calculated among all the vehicles having the specified end points D1 to D3 as the starting points O1 to O3 and the second point Y as the ending point. The second traffic volume P2 of the vehicle traveling from the second point Y to the first point X is acquired via a second road network (for example, an expressway). The acquired second traffic volume P2 is multiplied by the starting point ratios β1 to β3 to calculate the starting point first point traffic volume from the starting points O1 to O3 to the first point X. For example, the starting / ending point traffic volume from the starting point O1 (equal to the ending point D1) to the first point X is calculated as β1 × P2. As a result, even when an expressway or the like exists between the starting point and the ending point, the starting and ending traffic volume can be obtained, and the OD traffic volume (starting and ending traffic volume) of the entire road network including the highway can be calculated. It is possible to simulate the impact on roads due to traffic restrictions on expressways.

  In the seventh invention, the starting second point traffic volumes R1 to R3 from the starting points O1 to O3 to the second point Y are calculated. The starting second point traffic volumes R1 to R3 can be obtained from the uplink information. The starting point from the starting point O1 to O3 to the second point Y by subtracting the starting point first point traffic volume (β1 × P2), (β2 × P2), (β3 × P2) from the starting point second point traffic volume R1 to R3 Calculate traffic volume at two points. For example, the starting point second point traffic volume R1 obtained from the uplink information includes vehicles heading from the second point Y to the first point X, so that these vehicles are excluded from the starting point O1 to the second point Y. The true starting point first point traffic volume with ending at is calculated by {R1-β1 × P2}. Similarly, the starting point first point traffic volume starting at the second point Y from the starting points O2, O3 can be calculated by {R2-β2 × P2} and {R3-β3 × P2}, respectively. As a result, the OD traffic volume (starting / ending traffic volume) of the entire road network including the expressway can be calculated, and it is possible to simulate the influence on general roads due to traffic restrictions on the expressway.

  In the eighth invention, the second point first point traffic volume from the second point to the first point is calculated by subtracting the total value for each starting point of the starting point first point traffic amount from the second traffic amount P2. . For example, when the second traffic volume P2 starting from the second point Y and ending at the first point X is greater than the traffic volume {(β1 + β2 + β3) × P2} starting from O1 to O3 and ending at the first point X The second point first point start / end traffic volume from the second point Y to the first point X can be calculated by {P2− (β1 + β2 + β3) × P2}. Since the second traffic volume P2 includes vehicles starting from the starting points O1 to O3, the starting and ending traffic volume starting from the second point Y can be obtained by excluding the vehicles.

  In the ninth invention, the traffic simulator uses the start / end traffic calculated by the start / end traffic calculation device as input data. As a result, it is possible to simulate the influence on general roads due to traffic restrictions on expressways.

  According to the present invention, even in a road network including a highway where a road device capable of acquiring a vehicle identification code is not installed, that is, when the vehicle travels using a highway, The desired starting and ending traffic volume can be calculated, the OD traffic volume (starting and ending traffic volume) of the entire road network including the expressway can be calculated, and the impact on general roads due to traffic restrictions on the expressway Simulation is possible.

It is a block diagram which shows an example of a structure of the origin / endpoint traffic volume calculation apparatus which concerns on this Embodiment. It is a schematic diagram which shows an example of the road network from which the starting / ending point traffic volume calculation apparatus of this Embodiment calculates starting / ending point traffic volume. It is a schematic diagram which shows the example of a list of uplink information. It is a schematic diagram which shows an example of the driving | running route of the vehicle based on uplink information. It is a schematic diagram which shows an example of the path | route from a 1st point to each end point. It is explanatory drawing which shows the example of calculation of the start / end traffic volume by the start / end traffic volume calculation apparatus of this Embodiment. It is a schematic diagram which shows an example of the path | route from each starting point to the 1st point. It is explanatory drawing which shows the example of calculation of the start / end traffic volume by the start / end traffic volume calculation apparatus of this Embodiment. It is a flowchart which shows an example of the process sequence by the origin / endpoint traffic volume calculation apparatus of this Embodiment. It is a flowchart which shows the other example of the process sequence by the origin / endpoint traffic volume calculation apparatus of this Embodiment. It is a block diagram which shows the structural example of the traffic simulator of this Embodiment.

  Hereinafter, an origin / endpoint traffic calculation apparatus according to the present invention, a traffic simulator using the origin / endpoint traffic calculated by the origin / endpoint traffic calculation apparatus as input data, and an origin / endpoint traffic calculation method by the origin / endpoint traffic calculation apparatus An embodiment will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of the origin / destination traffic calculation device 100 according to the present embodiment. The start / end traffic volume calculation device 100 includes a control unit 10 that controls the entire device, an input unit 11, a start / end point specifying unit 12, a vehicle ratio calculation unit 13, an output unit 14, a start / end point traffic volume calculation unit 15, and predetermined information. The memory | storage part 16 etc. which memorize | store are provided.

  The start / end traffic volume calculation device 100 is a first road network (for example, a general road network) in which a plurality of road devices (for example, optical beacons, radio beacons, etc.) that acquire vehicle specific information (for example, vehicle identification codes) are installed. Road) and a first road network at a plurality of points, and a second road network (for example, a highway, etc.) that is not installed on the road, calculate. The starting and ending traffic volume is the number of vehicles per unit time that occurs at the starting point (including the starting point region) and disappears at the ending point (including the end point region).

  FIG. 2 is a schematic diagram illustrating an example of a road network in which the start / end point traffic volume calculation device 100 according to the present embodiment calculates the start / end point traffic volume. As shown in FIG. 2, the road network includes a general road 400 as a first road network and an expressway 300 as a second road network. The highway 300 is connected to the general road 400 at a first point X (exit / exit of the highway 300), and is connected to the general road 400 at a second point Y (exit / exit of the highway 300). That is, a vehicle traveling on the general road 400 can flow into the highway at the first point X and flow out of the highway at the second point Y. Further, the vehicle traveling on the general road 400 can flow into the highway at the second point Y and flow out of the highway at the first point X.

  As the optical beacon corresponding to the first point, for example, among the optical beacons around the entrance / exit of the expressway 300, an optical beacon that is highly likely to pass a vehicle that flows into or out of the expressway 300 passes in advance. Keep it. In the example of FIG. 2, the optical beacon 2005 is an optical beacon corresponding to the first point X. Similarly, the optical beacon corresponding to the second point is, for example, a light that is likely to pass a vehicle flowing into or out of the expressway 300 out of the beacons around the entrance / exit of the expressway 300. A beacon is set in advance. In the example of FIG. 2, the optical beacon 508 is an optical beacon corresponding to the second point Y.

  Further, as shown in FIG. 2, a part of the expressway 300 is a simulation target area (target prefecture), and the other part is a non-simulation target area (outside the target prefecture). In the example of FIG. 2, the second point Y is in the simulation target area (target prefecture), and the first point is in the simulation non-target area (outside the target prefecture). In addition to the optical beacons 508, optical beacons 601, 652, and 719 are installed at appropriate points on the general road 400 connected to the second point Y. In addition, the number of optical beacons and installation locations are not limited to the example of FIG. Further, the structures of the general road 400 and the expressway 300 are not limited to the example of FIG. Note that another entrance (not shown) may exist on the highway 300 between the first point X and the second point Y.

  The input unit 11 has an interface function between the start / end traffic calculation device 100 and the outside. The input unit 11 receives, for example, uplink information of a plurality of vehicles collected by a plurality of optical beacons (on-road devices) installed on the road. The uplink information includes, for example, a unique number of the optical beacon that the vehicle has passed, a passage time when the vehicle has passed the optical beacon, a vehicle identification code (unique information), and the like. The vehicle identification code includes information on the point to which it is assigned.

  The input unit 11 acquires the traffic amount P on the expressway 300 between the first point X and the second point Y where the expressway 300 (second road network) is connected to the general road 400 (first road network). It has a function as a traffic volume acquisition means. The traffic volume from the first point X to the second point Y is the first traffic volume P1, and the traffic volume from the second point Y to the first point X is the second traffic volume P2. The traffic volumes P1 and P2 on the expressway between the first point X and the second point Y can be obtained from, for example, the number of vehicles that have passed ETC (Electronic Toll Collection System) and the ETC loading rate. The traffic volume P1, P2 is not limited to ETC, and other methods may be used.

  The starting / ending point specifying unit 12 is configured to detect the vehicle starting from the first point and passing through the highway 300 and the second point Y based on uplink information including identification codes of a plurality of vehicles acquired by a road device such as an optical beacon. It has a function as start / end point specifying means for specifying a plurality of end points in the general road 400. In addition, the start / end point specifying unit 12 uses the first point as the end point and passes through the highway 300 and the second point Y based on uplink information including identification codes of a plurality of vehicles acquired by a road device such as an optical beacon. It has a function as start / end point specifying means for specifying a plurality of start points in the general road 400 of the vehicle.

  The vehicle ratio calculation unit 13 calculates the ratio of the vehicles whose end point is the end point specified by the start / end point specifying unit 12 among all vehicles starting from the first point X and passing through the highway 300 and the second point Y. It has a function as a calculation means. Further, the vehicle ratio calculation unit 13 calculates the ratio of vehicles whose starting point is the starting point specified by the starting point / end point specifying unit 12 among all the vehicles having the first point X as an end point and passing through the highway 300 and the second point Y. It functions as a ratio calculation means.

  The start / end traffic volume calculation unit 15 is one of the first point X, the second point Y, and one of the end points based on the acquired traffic volume P1 and the ratio calculated by the vehicle ratio calculation unit 13. It has a function as start / end traffic volume calculating means for calculating start / end traffic volume with two as start / end points. In addition, the start / end point traffic volume calculation unit 15 sets the first point X, the second point Y, and one start point of the plurality of start points based on the acquired traffic amount P2 and the ratio calculated by the vehicle ratio calculation unit 13. It has a function as start / end traffic volume calculation means for calculating start / end traffic volume with any two as start / end points.

  The output unit 14 outputs the start / end traffic calculated by the start / end traffic calculation unit 15 to, for example, a traffic simulator.

  Next, the operation of the start / end traffic calculation device 100 of the present embodiment will be described. First, an end point specifying method will be described. FIG. 3 is a schematic diagram showing a list example of uplink information. A plurality of optical beacons (on-road devices) installed on the road network receive uplink information (including information provided by optical beacons) received from a vehicle (on-vehicle device) in a predetermined transmission cycle. Send to. The center apparatus accumulates the received uplink information, and sends the accumulated uplink information (for example, information for several days) to the start / end point traffic volume calculation apparatus 100. Thereby, the origin / destination traffic calculation apparatus 100 acquires uplink information.

  As shown in FIG. 3, when the uplink information is represented as a list, for a plurality of vehicles, a unique number of the optical beacon that the vehicle has passed, a transit time when the vehicle has passed the optical beacon, a vehicle identification code (unique number), It can be seen that information such as the vehicle type, the unique number of the optical beacon that passed last time, and the travel time since the last time it passed are included.

  The start / end specification unit 12 divides the uplink information for each vehicle and specifies the start point (occurrence point) and the end point (disappearance point) of the vehicle. More specifically, the start / end specifying unit 12 sets the end point in the general road 400 of the vehicle that starts from the first point X and passes through the expressway 300 and the second point Y as a first road network point (general road). A plurality of points within 400). For example, the end points are D1, D2, and D3.

  FIG. 4 is a schematic diagram illustrating an example of a vehicle travel route based on uplink information. Only the data of the same vehicle identification code (for example, 1001) is extracted from the list of uplink information shown in FIG. 3, and the optical beacons that the vehicle has passed are arranged in the order of passing by arranging the extracted data in the order of the optical beacons that have passed. The travel route and the end point can be identified.

  For example, the end point in the general road 400 is identified as follows. For example, in the target area (prefecture), the first uplink is an optical beacon near the second point, and the point to which the vehicle identification code is assigned is the first point X. Uplink information of a vehicle that is an existing prefecture can be extracted, and the position of the optical beacon through which the vehicle with the vehicle identification code last passed can be set as the end points D1 to D3 (disappearing points). In the example of FIG. 4, a vehicle with a vehicle identification code 1001 is given a vehicle identification code 1001 in the prefecture where the first point X exists (non-simulation target area), and is first upgraded in the target area (prefecture). The link is an optical beacon 508 near the second point, and thereafter passes through optical beacons 601, 652, and 719. The position of the optical beacon that has passed at the latest time point represents the end point, that is, the disappearance point of the vehicle.

  Next, a method for calculating the traffic volume at the start and end of the road network including the expressway 300 will be described. First, a case where the first point X is the starting point will be described. FIG. 5 is a schematic diagram illustrating an example of a route from the first point X to each of the end points D1 to D3. In the example of FIG. 5, the end points D1, D2, and D3 are specified for convenience, but the number of end points is not limited to three.

  In addition, when specifying an end point, when the predetermined number or more vehicles make the same point the disappearance point, the point is specified as the end point. The predetermined number can be set to a different value depending on the day of the week, the time zone, and the like. Thus, by omitting (ignoring) routes with a small number of vehicle identification codes, that is, uplink information, for example, a small number of vehicles that do not use a highway (for example, a route indicated by symbol d in FIG. 5). Can be calculated with high accuracy.

  In addition, the start / end point specifying unit 12 calculates second point end point traffic volumes Q1 to Q3 from the second point Y to the end points D1 to D3 specified. The second point end point traffic volumes Q1 to Q3 can be obtained from the uplink information.

  The vehicle ratio calculation unit 13 determines the end point ratio of each end point vehicle with respect to all vehicles starting from the first point X and passing through the highway 300 and the second point Y, that is, all vehicles whose end points are specified in the general road 400. calculate. For example, assuming that the number of all vehicles is M and the number of vehicles whose end point is D1 is m1, the end point ratio α1 of vehicles whose end point is D1 is calculated by α1 = m1 / M. Similarly, the end point ratios α2 and α3 of the vehicles having the end points D2 and D3 are calculated.

  Further, the first traffic volume of a vehicle traveling from the first point X to the second point Y via the highway 300 is defined as P1.

  FIG. 6 is an explanatory diagram showing a calculation example of the start / end traffic volume by the start / end traffic calculation apparatus 100 of the present embodiment. The first point end point traffic volume having the start point as the first point X and the end points as D1 to D3 is calculated by multiplying the acquired first traffic amount P1 by the end point ratios α1 to α3. For example, the traffic volume between the first point X and the end point D1 is calculated as α1 × P1. Similarly, the start / end traffic volume between the first point X end point D2 is calculated by α2 × P1, and the start / end point traffic volume between the first point X end point D3 is calculated by α3 × P1. As a result, even when an expressway or the like exists between the starting point and the ending point, the starting and ending traffic volume can be obtained, and the OD traffic volume (starting and ending traffic volume) of the entire road network including the highway can be calculated. It is possible to simulate the impact on roads due to traffic restrictions on expressways.

  Further, the second point end point traffic volume having the start point as the second point Y and the end points as D1 to D3 is calculated by subtracting the first point end point traffic volume from the second point end point traffic volume. For example, the second point end point traffic volume Q1 obtained from the uplink information includes vehicles flowing into the highway 300 from a point between the first point X and the second point Y (exit / exit of the highway 300). Therefore, in order to exclude these vehicles, the true start / end traffic volume with the second point Y as the start point and the end point as D1 is calculated by {Q1-α1 × P}. Similarly, the true starting and ending traffic volumes having the second point Y as the starting point and the ending points as D2 and D3 can be calculated by {Q2-α2 × P} and {Q3-α3 × P}, respectively. As a result, the OD traffic volume (starting / ending traffic volume) of the entire road network including the expressway can be calculated, and it is possible to simulate the influence on general roads due to traffic restrictions on the expressway.

  Also, the first point second point traffic volume with the start point as the first point X and the end point as the second point Y is calculated by subtracting the total value for each end point of the first point end point traffic volume from the first traffic volume P1. To do. For example, the first traffic volume P1 starting at the first point X and ending at the second point Y is greater than the traffic volume {(α1 + α2 + α3) × P1} having the first point X as the starting point and D1 to D3 as the end points. The first point second point traffic volume from the first point X to the second point Y can be calculated by {P1− (α1 + α2 + α3) × P1}. Since the first traffic volume P1 includes all vehicles having the second point Y as the end point and vehicles having the end points D1 to D3 as the end points, by excluding vehicles having the end points D1 to D3 as the end points, The starting and ending traffic volume with the second point Y as the end point can be obtained.

  Next, a case where the first point X is the end point will be described. FIG. 7 is a schematic diagram illustrating an example of a route from each of the starting points O1 to O3 to the first point X. In the example of FIG. 7, the starting points O1, O2, and O3 are specified for convenience, but the number of starting points is not limited to three. The starting points O1 to O3 are the end points D1 to D3 specified in the example of FIG. 5 for convenience.

  Moreover, the starting / ending point specific | specification part 12 calculates the starting 2nd point traffic volume R1-R3 to the 2nd point Y from each starting point O1-O3. The starting second point traffic volumes R1 to R3 can be obtained from the uplink information.

  The vehicle ratio calculation unit 13 calculates the vehicle starting point ratios β1 to β3 for each starting point among all the vehicles having the specified end points D1 to D3 as the starting points O1 to O3 and the second point Y as the ending point. That is, the starting point ratio of each starting point with respect to all the vehicles having the second point Y as an end point is calculated. For example, assuming that the number of all vehicles is N and the number of vehicles whose starting point is O1 (D1) is n1, the starting point ratio β1 of the vehicle whose starting point is O1 is calculated by β1 = n1 / N. Similarly, vehicle starting ratios β2 and β3 with the starting points being O2 (D2) and O3 (D3) are calculated.

  Further, the second traffic volume of the vehicle traveling from the second point Y to the first point X via the highway 300 is defined as P2.

  FIG. 8 is an explanatory diagram showing a calculation example of the start / end traffic volume by the start / end traffic calculation apparatus 100 according to the present embodiment. The starting point first point traffic volume having the starting point O1 to O3 and the ending point being the first point X is calculated by multiplying the acquired first traffic amount P2 by the starting point ratios β1 to β3. For example, the starting / ending point traffic volume between the starting point O1 and the first point X is calculated by β1 × P2. Similarly, the starting and ending traffic volume between the starting point O2 and the first point X is calculated as β2 × P2, and the starting and ending traffic volume between the starting point O3 and the first point X is calculated as β3 × P2. As a result, even when an expressway or the like exists between the starting point and the ending point, the starting and ending traffic volume can be obtained, and the OD traffic volume (starting and ending traffic volume) of the entire road network including the highway can be calculated. It is possible to simulate the impact on roads due to traffic restrictions on expressways.

  The starting point second point traffic volume starting from O1 to O3 and ending point as the second point Y is the starting point first point traffic volume (β1 × P2), (β2 × P2) from the starting point second point traffic volume R1 to R3. ), (Β3 × P2) is subtracted. For example, the starting point second point traffic volume R1 obtained from the uplink information includes vehicles heading from the second point Y to the first point X, so that these vehicles are excluded from the starting point O1 to the second point Y. The true starting point first point traffic volume with ending at is calculated by {R1-β1 × P2}. Similarly, the starting point first point traffic volume starting at the second point Y from the starting points O2, O3 can be calculated by {R2-β2 × P2} and {R3-β3 × P2}, respectively. As a result, the OD traffic volume (starting / ending traffic volume) of the entire road network including the expressway can be calculated, and it is possible to simulate the influence on general roads due to traffic restrictions on the expressway.

  Further, the second point first point traffic volume having the start point as the second point and the end point as the first point is calculated by subtracting the total value of the start point first point traffic volume for each start point from the second traffic amount P2. For example, when the second traffic volume P2 starting from the second point Y and ending at the first point X is greater than the traffic volume {(β1 + β2 + β3) × P2} starting from O1 to O3 and ending at the first point X The second point first point start / end traffic volume from the second point Y to the first point X can be calculated by {P2− (β1 + β2 + β3) × P2}. Since the second traffic volume P2 includes vehicles starting from the starting points O1 to O3, the starting and ending traffic volume starting from the second point Y can be obtained by excluding the vehicles.

  FIG. 9 is a flowchart illustrating an example of a processing procedure performed by the origin / destination traffic calculation device 100 according to the present embodiment. FIG. 9 shows an example in which the first point is the starting point. The control unit 10 controls the start / end point specifying unit 12 to search for uplink information (S11), the first uplink in the target area (target prefecture) is the second point Y, and the vehicle identification code is The uplink information of the vehicle whose assigned point is the non-target area (non-target prefecture) where the first point X exists is extracted (S12). The uplink information extracted here is illustrated in FIG.

  The control unit 10 specifies the end point of the vehicle based on the extracted uplink information (S13). The control unit 10 controls the vehicle ratio calculation unit 13 to calculate the ratio (end point ratio α) of the vehicles at the end points among all the vehicles whose end points have been specified (S14). The control unit 10 acquires the OD traffic volume (first traffic volume P1) of the expressway 300 starting from the first point X and ending at the second point Y (S15).

  The control unit 10 controls the start / end point traffic volume calculation unit 15 to multiply the OD traffic amount (first traffic amount P1) by the ratio (end point ratio α) to start / end point traffic volume from the first point X to the end point. (First point end point traffic volume) is calculated (S16).

  The control unit 10 controls the start / end point traffic volume calculation unit 15 to calculate the start / end point traffic volume (second point end point traffic amount) from the second point Y to the end point (S17). The starting and ending traffic volume to the two points Y (first point second point traffic volume) is calculated (S18), and the process ends.

  FIG. 10 is a flowchart showing another example of the processing procedure performed by the origin / destination traffic calculation device 100 of the present embodiment. FIG. 10 shows an example in which the first point is the end point. The control unit 10 controls the start / end point specifying unit 12 to search for uplink information (S31), the first uplink in the target area (target prefecture) is the second point Y, and the vehicle identification code is The uplink information of the vehicle whose assigned point is the non-target area (non-target prefecture) where the first point X exists is extracted (S32). The uplink information extracted here is illustrated in FIG.

  The control unit 10 specifies the end point of the vehicle based on the extracted uplink information (S33). The control unit 10 controls the vehicle ratio calculation unit 13 to calculate the ratio (starting ratio β) of vehicles having the specified end point as the starting point and the second point as the starting point (S34). The control unit 10 acquires the OD traffic volume (second traffic volume P2) of the highway 300 starting from the second point Y and ending at the first point X (S35).

  The control unit 10 controls the start / end traffic calculation unit 15 to multiply the OD traffic (second traffic P2) by the ratio (start ratio β) to start / end traffic from the start to the first point X. (Starting point 1st point traffic volume) is calculated (S36).

  The control unit 10 controls the start / end point traffic calculation unit 15 to calculate the start / end point traffic volume (start point second point traffic amount) from the start point to the second point (S37), and the first point from the second point Y is calculated. The starting and ending traffic volume to the point X (second point first point traffic volume) is calculated (S38), and the process is terminated.

  FIG. 11 is a block diagram illustrating a configuration example of the traffic simulator 200 according to the present embodiment. The traffic simulator 200 uses the start / end point traffic calculated by the start / end point traffic calculation device 100 of the present embodiment as input data, calculates an evaluation value of a required traffic state quantity, and outputs it as output data.

  The traffic simulator 200 includes a simulator engine unit 201 that performs a calculation based on a calculation formula representing a vehicle movement model, and a generated traffic volume at an arbitrary link based on a traffic volume C calculated by the traffic volume calculation apparatus 100. And a traffic volume calculation unit 202 that calculates the extinct traffic volume, an evaluation value calculation unit 203 that calculates an evaluation value of the traffic state quantity based on the traffic volume calculated by the traffic volume calculation unit 202, and the like.

  As a result, it is possible to simulate the influence on general roads due to traffic restrictions on expressways.

  Conventionally, in a road network including a road network in which no on-road device such as a highway is installed, the starting and ending traffic volume cannot be obtained, but according to the present embodiment, the highway and the general road are included. In the road network, the starting and ending traffic volume between arbitrary points including the entrance / exit of the expressway can be obtained. Therefore, it is possible to evaluate how the traffic volume on expressways and general roads changes when traffic regulations such as highway closures are performed, and evaluate the impact of traffic regulations on expressways in advance. It becomes possible to do.

  In the above-described embodiment, the highway has been described as an example of the second road network. However, the second road network is not limited to the highway, and a road device that can receive a vehicle identification code. As long as the road is not installed.

  In the above-described embodiment, an optical beacon has been described as an example of a road device. However, the road device is not limited to an optical beacon, as long as it can acquire uplink information from a vehicle. Other devices such as a radio beacon may be used.

  The disclosed embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 10 Control part 11 Input part 12 Start / end point specific part 13 Vehicle ratio calculation part 14 Output part 15 Start / end point traffic volume calculation part 16 Storage part 100 Start / end point traffic amount calculation apparatus

Claims (10)

A road that includes a first road network in which a plurality of road devices for acquiring vehicle specific information are installed, and a second road network that is connected to the first road network at a plurality of points and in which the road devices are not installed. A device for calculating the starting and ending traffic volume between the starting point and the ending point of the vehicle on the network,
A traffic volume acquisition means for acquiring traffic volume on the second road network between a first point and a second point where the second road network is connected to the first road network;
Based on the specific information of the plurality of vehicles acquired by the road device, the second road network starting from the first point and the end point of the vehicle passing through the second point in the first road network Starting and ending point specifying means for specifying a plurality of points in one road network,
A ratio calculating means for calculating a ratio of vehicles whose end point is the end point specified by the start / end point specifying means among all vehicles starting from the first point and passing through the second road network and the second point;
Based on the traffic volume acquired by the traffic volume acquisition means and the ratio calculated by the ratio calculation means, any one of the first point, the second point, and one of the plurality of points in the first road network A starting and ending traffic volume calculating device, comprising: starting and ending traffic volume calculating means for calculating the starting and ending traffic volume having two as starting and ending points. The starting and ending point specifying means includes
Based on the unique information of the plurality of vehicles acquired by the road device, a plurality of end points in the first road network of the vehicle starting from the first point and passing through the second road network and the second point. An end point specifying means for specifying,
The ratio calculating means includes
An end point that calculates, for each end point, the end point ratio of vehicles whose end point is the end point specified by the end point specifying means among all the vehicles starting from the first point and passing through the second road network and the second point. Providing ratio calculation means,
The traffic volume acquisition means is
Comprising first traffic volume acquisition means for acquiring a first traffic volume of a vehicle traveling from the first point to the second point via the second road network;
The starting and ending traffic volume calculating means is:
The first traffic volume acquired by the first traffic volume acquisition means is multiplied by the end point ratio to calculate the first traffic volume at the first location from the first location to the end location. The origin / endpoint traffic volume calculation device according to claim 1. The end point specifying means includes
The origin and destination traffic volume calculation device according to claim 2, wherein when a predetermined number or more of vehicles have the same point as an extinction point, the point is specified as an end point. Based on the unique information of the plurality of vehicles acquired by the road device, the temporary second point end point traffic amount calculating means for calculating a provisional second point end point traffic to endpoint identified in the end-point specifying means from said second point With
The starting and ending traffic volume calculating means is:
The second point end point traffic volume from the second point to the end point is calculated by subtracting the first point end point traffic amount from the provisional second point end point traffic amount. Item 2 or claim 3 traffic volume calculation device. The starting and ending traffic volume calculating means is:
The first point second point traffic volume from the first point to the second point is calculated by subtracting the total value for each end point of the first point end point traffic amount from the first traffic amount. The start / end traffic volume calculation device according to any one of claims 2 to 4, wherein the traffic volume calculation device is a start / end traffic amount. The ratio calculating means includes
Of all vehicles starting from the end point specified by the end point specifying means and starting from the second point, the starting point ratio calculating means for calculating the starting point ratio of the vehicle for each starting point,
The traffic volume acquisition means is
Comprising second traffic volume acquisition means for acquiring a second traffic volume of a vehicle traveling from the second point to the first point via the second road network;
The starting and ending traffic volume calculating means is:
A starting point first point traffic volume from the starting point to the first point is calculated by multiplying the starting point ratio by the second traffic amount acquired by the second traffic amount acquiring unit. The origin / endpoint traffic volume calculation device according to any one of claims 2 to 5. Wherein based on the unique information of the plurality of vehicles acquired on the streets device includes a provisional origin second point traffic amount calculating means for calculating a provisional origin second point traffic to the second point from the origin,
The starting and ending traffic volume calculating means is:
The starting point second point traffic volume from the starting point to the second point is calculated by subtracting the starting point first point traffic volume from the provisional starting point second point traffic volume. Item 7. The starting and ending traffic volume calculation device according to Item 6. The starting and ending traffic volume calculating means is:
The second point first point traffic volume from the second point to the first point is calculated by subtracting the total value for each starting point of the starting point first point traffic amount from the second traffic amount. The start / end point traffic volume calculation device according to claim 6 or 7, characterized in that   A traffic simulator characterized by using the starting and ending traffic volume calculated by the starting and ending traffic volume calculating device according to any one of claims 1 to 8 as input data. A road that includes a first road network in which a plurality of road devices for acquiring vehicle specific information are installed, and a second road network that is connected to the first road network at a plurality of points and in which the road devices are not installed. A starting and ending traffic volume calculation method by a starting and ending traffic volume calculating device for calculating a starting and ending traffic volume between a starting point and an ending point of a vehicle on a network,
A traffic acquisition means for acquiring traffic on the second road network between a first point and a second point where the second road network is connected to the first road network;
Based on the specific information of the plurality of vehicles acquired by the road device, the second road network starting from the first point and the end point of the vehicle passing through the second point in the first road network A step of specifying a plurality of origin / destination identification means as one road network point;
A step of calculating a ratio of a vehicle whose end point is the end point specified by the start / end point specifying unit among all the vehicles starting from the first point and passing through the second road network and the second point. When,
Based on the acquired traffic volume and the calculated ratio, the starting point is one of the first point, the second point, and one of the plurality of points in the first road network. A starting and ending traffic volume calculating method , wherein the starting and ending traffic volume calculating means calculates a traffic volume.

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