JP2019179352A - Travel route operation device, delivery system, method for calculating travel route by travel route operation device, and program - Google Patents

Abstract

To provide a travel route operation device allowing fuel to be surely supplied to a relay vehicle and a delivery vehicle.SOLUTION: A travel route operation device comprises: an information acquisition unit which acquires position information including current position information, possible travel distance information including information about a possible travel distance, and delivery destination information including a position of a delivery destination and information about a delivery time to the delivery destination, from each of a delivery vehicle for delivering a package to the delivery destination and a relay vehicle for transporting the package to a relay point; a relay point determination unit which determines the relay point on the basis of information indicative of a position of a hub being a start point of the relay vehicle and the delivery destination information; a travel route calculation unit which calculates respective travel routes of the relay vehicle and the delivery vehicle on the basis of the relay point determined by the relay point determination unit, the position information, and the possible travel distance information; and a travel instruction unit which transmits the respective travel routes of the relay vehicle and the delivery vehicle, which routes are calculated by the travel route calculation unit, to the relay vehicle and the delivery vehicle respectively.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a travel route calculation device, a delivery system, a travel route calculation method using the travel route calculation device, and a program.

With the increasing use of mail-order sales via the Internet, the number of deliveries of parcels such as courier services is increasing.
Patent Document 1 discloses a technique for efficiently delivering a package as a related technique.

Japanese Patent No. 6040391

  By the way, the number of deliveries of packages is approaching the number of deliveries that can be delivered by a courier company per day. As a result, the courier may be concerned about delivery and forget to supply fuel to the delivery vehicle.

  An object of each aspect of the present invention is to provide a travel route calculation device, a delivery system, a travel route calculation method and a program that can solve the above-described problems.

  In order to achieve the above object, according to one aspect of the present invention, a travel route calculation device is configured to detect a current position from each of a delivery vehicle that delivers a package to a delivery destination and a relay vehicle that transports the package to a relay point. Information acquisition unit for acquiring location information including information, travelable distance information including information related to a travelable distance, and delivery destination information including information on the location of the delivery destination and delivery time to the delivery destination; Based on the information indicating the location of the base that is the starting point of the relay vehicle and the delivery destination information, the relay point determining unit that determines the relay point, the relay point determined by the relay point determining unit, Based on the position information and the travelable distance information, a travel route calculation unit that calculates the travel route of each of the relay vehicle and the delivery vehicle, and each of the relay vehicle and the delivery vehicle calculated by the travel route calculation unit The travel route Comprising a running instruction unit that transmits to each of the relay vehicle and the delivery vehicle to, a.

  According to another aspect of the present invention, a delivery system is a delivery system having the above-described travel route calculation device and a route display device, wherein the route display device provides information on remaining fuel or travelable distance. A travelable distance information acquisition unit that transmits the travelable distance information including the information to the travel route calculation device, and the delivery destination information including information on a delivery destination of each package and a scheduled delivery time to the delivery destination, to the travel route calculation device A delivery destination management unit for transmission.

  According to another aspect of the present invention, the travel route calculation method by the travel route calculation device is a travel route calculation method by the travel route calculation device that transmits the calculated travel route to each of the corresponding relay vehicle and delivery vehicle. From each of the delivery vehicle that delivers the package to the delivery destination and the relay vehicle that transports the package to the relay point, the position information including the current position information and the travelable distance information including the information related to the travelable distance Obtaining delivery destination information including information on the location of the delivery destination and delivery time to the delivery destination, information indicating the location of the base that is the starting point of the relay vehicle, and the delivery destination information Determining the relay point, and calculating the travel route of each of the relay vehicle and the delivery vehicle based on the determined relay point, the position information, and the travelable distance information. Including the.

  According to another aspect of the present invention, a program stores position information including current position information from a delivery vehicle that delivers a package to a delivery destination and a relay vehicle that transports the package to a relay point. Obtaining travel destination information including information related to the travelable distance, delivery destination information including information on the location of the delivery destination and delivery time to the delivery destination, and the location of the base station that is the starting point of the relay vehicle The relay point is determined based on the information indicating the position and the delivery destination information, and the relay point determined based on the determined relay point, the position information, and the travelable distance information. And calculating the travel route of each delivery vehicle and transmitting the calculated travel route of each of the relay vehicle and the delivery vehicle to the corresponding relay vehicle and the delivery vehicle.

  According to each aspect of the present invention, fuel can be reliably supplied to the relay vehicle and the delivery vehicle.

It is a figure which shows the structure of the delivery system by one Embodiment of this invention. It is a figure which shows the structure of the travel route calculating apparatus by one Embodiment of this invention. It is a 1st figure which shows the example of how to determine the relay point in one Embodiment of this invention. It is a figure which shows the structure of the route display apparatus by one Embodiment of this invention. It is a figure which shows the processing flow of the delivery system by one Embodiment of this invention. It is a 2nd figure which shows the example of the determination method of the relay point in one Embodiment of this invention. It is a figure which shows the minimum structure of the driving | running route calculating apparatus by one Embodiment of this invention. It is a schematic block diagram which shows the structure of the computer which concerns on at least 1 embodiment.

<Embodiment>
Hereinafter, embodiments will be described in detail with reference to the drawings.
As shown in FIG. 1, a delivery system 1 according to an embodiment of the present invention includes a travel route calculation device 10, a relay vehicle 20, and delivery vehicles 30a, 30b, and 30c. The delivery vehicles 30a, 30b, and 30c are collectively referred to as a delivery vehicle 30. In the delivery system 1, the relay vehicle 20 transports the package to be delivered to the relay point P and delivers it to each delivery vehicle 30 so that each delivery vehicle 30 can receive the package at a position close to the delivery destination. . Further, the delivery system 1 stores the luggage at the sales office O by receiving the luggage to be brought back to the sales office O from each of the delivery cars 30 when the relay car 20 transports the cargo to be delivered to the relay point P. Allows you to speed up.

The travel route calculation device 10 is a device that calculates the travel routes of the relay vehicle 20 and the delivery vehicle 30 and causes the relay vehicle 20 and the delivery vehicle 30 to travel on the calculated travel route.
As illustrated in FIG. 2, the travel route calculation device 10 includes an information acquisition unit 101, a route calculation unit 102 (an example of a relay point determination unit, an example of a travel route calculation unit), a travel instruction unit 103, a communication unit 104, and a storage unit. 105.

  The information acquisition unit 101 acquires position information, travelable distance information, and delivery destination information from the relay vehicle 20 and the delivery vehicle 30, respectively. The position information includes information on the current position of each of the relay car 20 and the delivery car 30. The travelable distance information is information used to calculate the travelable distance of each of the relay vehicle 20 and the delivery vehicle 30. The travelable distance information is, for example, information indicating the travelable distance calculated by the relay vehicle 20 and the delivery vehicle 30 from the remaining fuel and fuel consumption. The travelable distance information is, for example, the remaining fuel of the relay vehicle 20 and the delivery vehicle 30. When the travelable distance information is the remaining fuel, the storage unit 105 stores the fuel consumption of the relay vehicle 20 and the delivery vehicle 30, and the information acquisition unit 101 stores the relay vehicle 20 and the fuel consumption from the fuel consumption and the remaining fuel stored in the storage unit 105. The travelable distance of each delivery vehicle 30 is calculated.

The route calculation unit 102 determines a relay point P at which the relay vehicle 20 delivers the package to each delivery vehicle 30 based on the position information of the sales office O and the delivery destination information acquired by the route calculation unit 102.
As shown in FIG. 3, for example, a delivery destination that delivers at the earliest time among undelivered parcels of the delivery vehicle 30 a is assumed as delivery destination A. The delivery destination that delivers the earliest time among the undelivered packages of the delivery vehicle 30b is assumed to be delivery destination B. A delivery destination to be delivered at the earliest time among undelivered packages of the delivery vehicle 30c is a delivery note C. In this case, the route calculation unit 102 determines, for example, the center of gravity of an area having the business office O, the delivery destination A, the delivery destination B, and the delivery destination C as outer shapes as the relay point P.

The route calculation unit 102 calculates the travel routes of the relay vehicle 20 and the delivery vehicle 30 based on the relay point P, the position information acquired by the information acquisition unit 101, and the travelable distance information.
For example, the route calculation unit 102 specifies the shortest route from the current position to the relay point P for each of the relay vehicle 20 and the delivery vehicle 30. The route is specified by using a technique in which the car navigation system specifies a route using a function such as GPS (Global Positioning System). The route calculation unit 102 compares the distance of the shortest route with the travelable distance for each of the relay vehicle 20 and the delivery vehicle 30.
As a result of the comparison, if the route calculation unit 102 determines that the distance of the shortest route is shorter than the travelable distance, the route calculation unit 102 specifies the shortest route as the route for the relay vehicle 20 and the delivery vehicle 30 that are the objects of the determination. .
If the route calculation unit 102 determines that the distance of the shortest route is longer than the distance that can be traveled as a result of the comparison, the route calculation unit 102 uses fuel (gasoline, electricity) for the relay vehicle 20 and the delivery vehicle 30 that are the objects of the determination. The route that goes through the station that can replenish is identified. The route is specified by using a technique in which the car navigation system specifies a route using a function such as GPS.

The travel instruction unit 103 transmits the travel route specified by the route calculation unit 102 to the relay vehicle 20 and the delivery vehicle 30 via the communication unit 104.
The communication unit 104 communicates with each of the relay vehicle 20 and the delivery vehicle 30.
The storage unit 105 stores various information necessary for processing performed by the travel route calculation device 10. For example, when the travelable distance information is the remaining fuel, the storage unit 105 stores the fuel consumption of each of the relay vehicle 20 and the delivery vehicle 30.

  The relay vehicle 20 transports the package to be delivered to the relay point P and delivers the package to each delivery vehicle 30. In addition, the relay vehicle 20 receives a package to be taken back to the sales office O at the relay point P from the delivery vehicle 30. The relay vehicle 20 includes a route display device 40α.

Each delivery vehicle 30 delivers the package to the delivery destination of its delivery vehicle 30. In addition, each of the delivery vehicles 30 passes the luggage stored in the sales office O to the relay vehicle 20 at the relay point P. The delivery vehicle 30a includes a route display device 40a. The delivery vehicle 30b includes a route display device 40b. The delivery vehicle 30c includes a route display device 40c.
The route display devices 40α, 40a, 40b, and 40c are collectively referred to as a route display device 40.

  As shown in FIG. 4, each of the route display devices 40 includes a position information acquisition unit 401, a travelable distance information acquisition unit 402, a delivery destination management unit 403, a display control unit 404, a display unit 405, a communication unit 406, and a storage unit. 407. The route display device 40 is a device that displays the travel routes of the corresponding relay vehicle 20 and delivery vehicle 30.

The position information acquisition unit 401 acquires position information of the corresponding relay vehicle 20 and delivery vehicle 30. The position information acquisition unit 401 transmits the acquired position information to the travel route calculation device 10 via the communication unit 406.
The travelable distance information acquisition unit 402 acquires travelable distance information of the corresponding relay vehicle 20 and delivery vehicle 30. The travelable distance information acquisition unit 402 transmits the acquired travelable distance information to the travel route calculation device 10 via the communication unit 406.
The delivery destination management unit 403 writes the delivery destination of each package and the scheduled delivery time in the storage unit 407 in association with each other. The delivery destination management unit 403 transmits delivery destination information including information on the delivery destination of each package and the scheduled delivery time to the travel route calculation device 10 via the communication unit 406.
The display control unit 404 controls display on the display unit 405. For example, the display control unit 404 causes the display unit 405 to display a travel route, a delivery destination, a delivery time, and the like.
The display unit 405 displays the travel route according to the control by the display control unit 404.
The communication unit 406 communicates with the travel route calculation device 10.
The storage unit 407 stores various information necessary for processing performed by the route display device 40. For example, the storage unit 407 stores a delivery destination of each package and a scheduled delivery time in association with each other.

  Next, processing of the delivery system 1 according to an embodiment of the present invention will be described. Here, the processing of the delivery system 1 shown in FIG. 5 will be described. The delivery destination to be delivered at the earliest time among the undelivered packages of the delivery vehicle 30a is the delivery destination A, the delivery destination to be delivered at the earliest time among the undelivered packages of the delivery vehicle 30b is the delivery destination B, and the delivery vehicle. A delivery destination delivered at the earliest time among undelivered packages 30c is assumed as delivery destination C.

  The information acquisition unit 101 acquires position information, travelable distance information, and delivery destination information from each of the relay vehicle 20 and the delivery vehicle 30 (step S1). The information acquisition unit 101 outputs the acquired position information, travelable distance information, and delivery destination information to the route calculation unit 102.

The route calculation unit 102 receives position information, travelable distance information, and delivery destination information from the information acquisition unit 101. The route calculation unit 102 determines a relay point P at which the relay vehicle 20 delivers the package to each of the delivery vehicles 30 based on the location information of the sales office O and the received delivery destination information (step S2). For example, the route calculation unit 102 determines the center of gravity of an area having the business office O, the delivery destination A, the delivery destination B, and the delivery destination C as outer shapes as the relay point P.
The route calculation unit 102 calculates the travel routes of the relay vehicle 20 and the delivery vehicle 30 based on the determined relay point P and the received position information and travelable distance information (step S3). For example, the route calculation unit 102 specifies the shortest route from the current position to the relay point P for each of the relay vehicle 20 and the delivery vehicle 30. The route calculation unit 102 compares the distance of the shortest route with the travelable distance for each of the relay vehicle 20 and the delivery vehicle 30. As a result of the comparison, if the route calculation unit 102 determines that the distance of the shortest route is shorter than the travelable distance, the route calculation unit 102 specifies the shortest route as the route for the relay vehicle 20 and the delivery vehicle 30 that are the objects of the determination. . If the route calculation unit 102 determines that the distance of the shortest route is longer than the distance that can be traveled as a result of the comparison, the route calculation unit 102 uses fuel (gasoline, electricity) for the relay vehicle 20 and the delivery vehicle 30 that are the objects of the determination. The travel route that passes through the station that can be replenished is identified. The travel route passing through the station is specified as, for example, a travel route in which the distance to the relay point P is the shortest among the stations present within the travelable range. In addition, the route calculation unit 102 may acquire the position information of the station from the position information stored in the car navigation system.
The route calculation unit 102 outputs the identified travel routes of the relay vehicle 20 and the delivery vehicle 30 to the travel instruction unit 103.

  The travel instruction unit 103 receives the travel routes of the relay vehicle 20 and the delivery vehicle 30 from the route calculation unit 102. The travel instruction unit 103 transmits the travel routes of the relay vehicle 20 and the delivery vehicle 30 to the corresponding relay vehicle 20 and the delivery vehicle 30 via the communication unit 104 (step S4).

  The display control unit 404 of each of the relay vehicle 20 and the delivery vehicle 30 receives the travel route from the travel route calculation device 10 via the communication unit 406 (step S5). The display control unit 404 causes the display unit 405 to display the received travel route. The display unit 405 displays the travel route (step S6).

The delivery system 1 according to the embodiment of the present invention has been described above. In the delivery system 1 according to the embodiment of the present invention, the information acquisition unit 101 acquires position information, travelable distance information, and delivery destination information from the relay vehicle 20 and the delivery vehicle 30 respectively. The route calculation unit 102 receives position information, travelable distance information, and delivery destination information from the information acquisition unit 101. The route calculation unit 102 determines a relay point P at which the relay vehicle 20 delivers the package to each of the delivery vehicles 30 based on the location information of the sales office O and the received delivery destination information. The route calculation unit 102 calculates the travel routes of the relay vehicle 20 and the delivery vehicle 30 based on the relay point P, the position information, and the travelable distance information. The travel instruction unit 103 transmits the travel routes of the relay vehicle 20 and the delivery vehicle 30 to the corresponding relay vehicle 20 and the delivery vehicle 30, respectively.
In this way, the travel route calculation device 10 can calculate a travel route in consideration of fuel. By transmitting the calculated travel route to the route display device 40 included in each of the relay vehicle 20 and the delivery vehicle 30 by the travel route calculation device 10, the route display device 40 can display the travel route in consideration of fuel. As a result, the delivery company can reliably supply fuel to the relay vehicle 20 and the delivery vehicle 30.

Further, the route calculation unit 102 determines the center of gravity of an area having the outer shape of each delivery destination delivered at the earliest time among undelivered packages of the sales office and each delivery vehicle 30 as the relay point P.
In this way, each distance from the delivery destination of each delivery vehicle 30 to the relay point P can be made substantially equal. Since the delivery area of each delivery vehicle 30 is often determined to be a limited and narrow area, each delivery vehicle 30 may be traveling near the delivery destination that delivers the earliest time among undelivered packages. Is expensive. As a result, the distance from each delivery vehicle 30 to the relay point P can be made approximately equal, and the burden of moving each delivery vehicle 30 to the relay point P, that is, fatigue between drivers of each delivery vehicle 30 is reduced. Can be equal.

As shown in FIG. 6, when the delivery destinations A, B, C, and D used when the route calculation unit 102 determines the relay point are in a position surrounding the sales office O, the relay point is more than the sales office O. Distant delivery destinations arise. For example, in the example illustrated in FIG. 6, the route calculation unit 102 determines the center of gravity of the area having the delivery destinations A, B, C, and D as the relay point, and therefore the relay point P in FIG. 6 is the relay point in this case. It becomes a point. As a result, the relay point P is farther from the delivery destinations C and D than the sales office O.
Therefore, when the delivery destinations A, B, C, and D used when the route calculation unit 102 determines the relay point are in a position that surrounds the sales office O, for example, the sales office O is the origin, and the sales office O faces east. Is 0 degrees, north is 90 degrees, west is 180 degrees, and south is 270 degrees. Then, the route calculation unit 102 may, for example, include an area between 315 degrees and 45 degrees, an area between 45 degrees and 135 degrees, an area between 135 degrees and 225 degrees, and an area between 225 degrees and 315 degrees. Dividing into four areas, a relay point is determined using a delivery destination existing in each area. In this case, the route calculation unit 102 determines the relay point P1, which is the center of gravity of the region having the business office O and the delivery destinations A and B as the outer shape, as the relay point for the region between 315 and 45 degrees. In addition, the route calculation unit 102 determines a relay point P2, which is the center of gravity of the region having the business office O and the delivery destinations C and D as the outer shape, for the region between 135 degrees and 225 degrees.

FIG. 7 is a diagram showing a minimum configuration of the travel route calculation apparatus 10 according to the embodiment of the present invention.
As illustrated in FIG. 7, the travel route calculation device 10 includes an information acquisition unit 101, a relay point determination unit 102 a, a travel route calculation unit 102 b, and a travel instruction unit 103.
The information acquisition unit 101 includes location information including current location information and travel distance information from each of a delivery vehicle that delivers a package to a delivery destination and a relay vehicle that transports the package to a relay point. Delivery destination information including possible distance information and information on the delivery destination position and delivery time to the delivery destination is acquired.
The relay point determination unit 102a determines the relay point based on the information indicating the location of the base that is the starting point of the relay vehicle and the delivery destination information.
The travel route calculation unit 102b calculates the travel routes of the relay vehicle and the delivery vehicle based on the relay point determined by the relay point determination unit, the position information, and the travelable distance information.
The travel instruction unit 103 transmits the travel routes of the relay vehicle and the delivery vehicle calculated by the travel route calculation unit to the corresponding relay vehicle and the delivery vehicle, respectively.

  Note that the processing order of the processing according to the embodiment of the present invention may be changed within a range in which appropriate processing is performed.

  Each of the storage units 105 and 407 and other storage devices in the embodiment of the present invention may be provided anywhere within a range where appropriate information is transmitted and received. In addition, each of the storage unit and other storage devices may exist in a range in which appropriate information is transmitted and received and the data may be distributed and stored.

Although the embodiment of the present invention has been described, the travel route calculation device 10, the route display device 40, and other control devices described above may have a computer system therein. The process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing this program. A specific example of a computer is shown below.
FIG. 8 is a schematic block diagram illustrating a configuration of a computer according to at least one embodiment.
As shown in FIG. 8, the computer 5 includes a CPU 6, a main memory 7, a storage 8, and an interface 9.
For example, each of the travel route calculation device 10, the route display device 40, and other control devices described above is mounted on the computer 5. The operation of each processing unit described above is stored in the storage 8 in the form of a program. The CPU 6 reads the program from the storage 8 and develops it in the main memory 7 and executes the above processing according to the program. Further, the CPU 6 secures a storage area corresponding to each of the above-described storage units in the main memory 7 according to the program.

  Examples of the storage 8 include an HDD (Hard Disk Drive), an SSD (Solid State Drive), a magnetic disk, a magneto-optical disk, a CD-ROM (Compact Disc Read Only Memory), and a DVD-ROM (Digital Versatile Disc Disk). And semiconductor memory. The storage 8 may be an internal medium directly connected to the bus of the computer 5 or an external medium connected to the computer 5 via the interface 9 or a communication line. When this program is distributed to the computer 5 through a communication line, the computer 5 that has received the distribution may develop the program in the main memory 7 and execute the above processing. In at least one embodiment, the storage 8 is a non-transitory tangible storage medium.

  The program may realize part of the functions described above. Further, the program may be a so-called difference file (difference program) that can realize the above-described functions in combination with a program already recorded in the computer system.

  Although several embodiments of the present invention have been described, these embodiments are examples and do not limit the scope of the invention. These embodiments may be variously added, omitted, replaced, and changed without departing from the gist of the invention.

1 ... delivery system 5 ... computer 6 ... CPU
7 ... Main memory 8 ... Storage 9 ... Interface 10 ... Travel route computing device 20 ... Relay vehicles 30, 30a, 30b, 30c ... Delivery vehicles 40, 40α, 40a, 40b, 40c ... route display device 101 ... information acquisition unit 102 ... route calculation unit 102a ... relay point determination unit 102b ... travel route calculation unit 103 ... travel instruction unit 104, 406 ... Communication unit 105, 407 ... Storage unit 401 ... Position information acquisition unit 402 ... Travelable distance information acquisition unit 403 ... Delivery destination management unit 404 ... Display control unit 405 ... Display unit

Claims (5)

From each of the delivery vehicle that delivers the package to the delivery destination and the relay vehicle that transports the package to the relay point, the position information including the information on the current position, the travelable distance information including the information related to the travelable distance, An information acquisition unit for acquiring delivery destination information including information on the location of the delivery destination and the delivery time to the delivery destination;
A relay point determination unit that determines the relay point based on information indicating a location of a base that is a starting point of the relay vehicle and the delivery destination information;
Based on the relay point determined by the relay point determination unit, the position information and the travelable distance information, a travel route calculation unit that calculates a travel route of each of the relay vehicle and the delivery vehicle,
A travel instruction unit that transmits the travel routes of the relay vehicle and the delivery vehicle calculated by the travel route calculation unit to the corresponding relay vehicle and the delivery vehicle, respectively.
A travel route calculation device comprising: The delivery information is
A delivery destination of the package delivered at the earliest time among undelivered packages of each of the delivery vehicles,
The relay point determination unit
Determining the center of gravity of an area having an outline of a delivery destination of the package delivered at the earliest time among undelivered packages of each of the delivery vehicles and the base as the relay point;
The travel route calculation device according to claim 1. A delivery system having the travel route calculation device according to claim 1 or 2 and a route display device,
The route display device
A travelable distance information acquisition unit that transmits travelable distance information including information on remaining fuel or travelable distance to the travel route calculation device;
A delivery destination management unit that transmits delivery destination information including information on the delivery destination of each package and information on the estimated delivery time to the delivery destination;
Comprising
Delivery system. A travel route calculation method by a travel route calculation device that transmits the calculated travel route to each of the corresponding relay vehicle and delivery vehicle,
From each of the delivery vehicle for delivering a package to a delivery destination and the relay vehicle for transporting the package to a relay point, position information including information on the current position, and travelable distance information including information on a travelable distance, Obtaining delivery destination information including information on the location of the delivery destination and delivery time to the delivery destination;
Determining the relay point based on the information indicating the location of the base that is the starting point of the relay vehicle and the delivery destination information;
Calculating the travel route of each of the relay vehicle and the delivery vehicle based on the determined relay point, the position information and the travelable distance information;
A travel route calculation method by a travel route calculation device including: On the computer,
From each of the delivery vehicle that delivers the package to the delivery destination and the relay vehicle that transports the package to the relay point, the position information including the information on the current position, the travelable distance information including the information related to the travelable distance, Obtaining delivery destination information including information about the location of the delivery destination and the delivery time to the delivery destination;
Determining the relay point based on the information indicating the location of the base that is the starting point of the relay vehicle and the delivery destination information;
Calculating the travel routes of the relay vehicle and the delivery vehicle based on the determined relay point, the position information and the travelable distance information;
Transmitting the calculated travel routes of the relay vehicle and the delivery vehicle to the corresponding relay vehicle and the delivery vehicle, respectively.
A program that executes

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