WO2014038915A1

WO2014038915A1 - Road side equipment and method for controlling traffic signal using road side equipment

Info

Publication number: WO2014038915A1
Application number: PCT/KR2013/008140
Authority: WO
Inventors: 문영준
Original assignee: 한국교통연구원
Priority date: 2012-09-10
Filing date: 2013-09-10
Publication date: 2014-03-13
Also published as: KR101350357B1

Abstract

The present invention relates to a method for controlling a traffic signal using road side equipment (RSE), and the method for controlling a traffic signal using road side equipment comprises the steps of: receiving an entry request signal from on-board equipment (OBE) mounted in a vehicle; determining whether to permit the entry of the vehicle on the basis of signal light mode information and information on another vehicle; requesting signal control which is necessary for the passage of the vehicle to a signal controller when the entry of the vehicle is permitted; and notifying the on-board equipment mounted in the vehicle of the determination result on whether or not entry is permitted.

Description

Traffic signal control method using roadside device and roadside device

The present invention relates to a traffic signal control method using a roadside equipment (RSE, Roadside Equipment) and a roadside device.

Traffic lights are installed on the road, especially at intersections, to facilitate traffic flow and to prevent traffic accidents. Traffic lights typically include red, green, and yellow signals, and in normal mode each of these signals is alternately repeated at regular time intervals to control traffic flow at the intersection.

On the other hand, in the case of independent intersections or general intersections with few vehicles, operating the traffic lights in the normal mode at night time causes unnecessary waste of resources. That is, since the traffic controller must continuously control the traffic lights, it must bear unnecessary load, and the vehicle owner entering the intersection must wait at the stop line until the entrance signal comes in despite the absence of the vehicle. It results in waste of time and waste of energy.

In order to solve this problem, the traffic light at the intersection is switched to the dynamic mode, that is, the flashing mode in which the yellow signal is continuously blinking, in the case of a night time with few vehicles. Therefore, the vehicle's owner can pass through the intersection according to the surrounding traffic conditions, thereby minimizing the waiting time of the vehicle and reducing unnecessary load of the signal controller.

However, when operating the traffic lights in the flashing mode, since the traffic flow depends entirely on the attention of the owner, there is a problem that there is always a risk of a traffic accident, especially at night time when the attention of the vehicle is low.

Accordingly, there is a need for a traffic signal control system and method for minimizing the waiting time and energy consumption of a vehicle and reducing the load of the signal controller while preventing the risk of a traffic accident.

In order to meet this demand, the present invention provides a method for minimizing the waiting time of a vehicle and reducing the risk of a traffic accident while reducing the load of the signal controller through differential traffic signal control according to the mode of the traffic light. The present invention provides a traffic signal control method using a roadside device of Intersection signal information and violation Warning System and a roadside device thereof.

In order to achieve this object, according to an aspect of the present invention, in the traffic signal control method using a road side equipment (RSE), from the on-board equipment (OBE, On-Board Equipment) mounted on the vehicle Receiving a request signal; Determining whether to permit entry of the vehicle based on traffic light mode information and other vehicle information; Requesting signal control necessary for passage of the vehicle to a signal controller when the vehicle is allowed to enter; And notifying a result of determining whether to permit entry to the on-vehicle device mounted on the vehicle.

The roadside device may allow entry of the vehicle at least when the traffic light mode information indicates a flashing mode. The traffic signal control method may further include determining whether the traffic light mode information indicates the flashing mode; If the traffic light mode information indicates the blinking mode, determining the entry priority of each vehicle using the other vehicle information; And determining whether to permit entry of the vehicle based on the entry priority.

Further, after the request for signal control, when the entry request signal is received from a trailing vehicle approaching after the vehicle within a predetermined threshold time, the signal controller continuously maintains the signal state required for the traffic of the vehicle. The method may further include requesting to.

According to still another aspect of the present invention, a roadside equipment (RSE) for controlling traffic signals includes: a receiving unit receiving an entry request signal from an on-board equipment (OBE) mounted on a vehicle; A control unit for determining whether to permit entry of the vehicle based on traffic light mode information and other vehicle information, and requesting a signal controller to control a signal necessary for passage of the vehicle when entry of the vehicle is permitted; It provides a roadside device comprising a transmitting unit for transmitting a result of determining whether to allow the entry into the vehicle-mounted device mounted on the vehicle.

Here, the controller may allow the vehicle to enter when at least the traffic light mode information indicates a flashing mode, and further, when it is determined that the traffic light mode information indicates the flashing mode, The entry priority of each vehicle may be determined using the other vehicle information, and whether to permit entry of the vehicle may be determined based on the entry priority.

In addition, when the controller receives the entry request signal within a predetermined threshold time from a trailing vehicle approaching the vehicle, the controller may request the signal controller to continuously maintain a signal state required for passage of the vehicle.

In addition, when the vehicle does not decelerate despite notifying the vehicle-mounted device of the vehicle that the vehicle is not allowed to enter, the controller may request signal control necessary for the vehicle to preferentially pass through to the signal controller.

According to another aspect of the present invention, in a traffic signal control method using a road side equipment (RSE), the traffic light mode information to the on-board vehicle (OBE, On-Board Vehicle) of the vehicle entered into the communication coverage Transmitting traffic light status information comprising; If the traffic light mode information indicates a flashing mode, determining whether to permit entry of the vehicle using other vehicle information; Requesting signal control necessary for entry of the vehicle to a signal controller based on an entry permission decision; And transmitting a result of determining whether to permit entry of the vehicle to the on-vehicle device.

According to still another aspect of the present invention, a roadside equipment (RSE) for controlling traffic signals includes: a first communication interface for transmitting and receiving information with an on-vehicle device of a vehicle entering into communication coverage; A second communication interface for communicating with a signal controller; A traffic light state checking unit which checks traffic light mode information and transmits traffic light state information including the traffic light mode information to the on-vehicle device through the first communication interface; And when the traffic light mode information indicates a flashing mode, determining whether to permit the entry of the vehicle using other vehicle information, and controlling a signal required for entry of the vehicle based on the determination of admission of the vehicle. And a control unit which transmits a control signal requesting a request to the signal controller through the second communication interface, and transmits a result of determining whether to allow the vehicle to enter the vehicle-mounted device through the first communication interface. A roadside device is provided.

According to the above aspect of the present invention, the differential traffic signal control according to the traffic light mode is possible, thereby minimizing the vehicle waiting time at the intersection and reducing the traffic accident occurrence rate.

1 is a block diagram of a traffic signal control system according to an aspect of the present invention,

2 is a block diagram showing a detailed configuration of a roadside apparatus according to an aspect of the present invention,

3 is a flow chart briefly showing a traffic signal control method according to an aspect of the present invention;

4 is an exemplary view for explaining in detail a traffic signal control method for an aspect of the present invention;

5 is a view showing the configuration of a roadside device for controlling traffic signals according to another aspect of the present invention;

6 is a flowchart illustrating a traffic signal control method according to another aspect of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

CIWS (Cooperative Intersection Signal Information and Violation Warning System) is a system to improve the driver's perception ability to prevent traffic accidents at intersections. Roadside equipment (RSE) and vehicles installed along the lanes of intersections On-board equipment (OBE) mounted on the is configured to include.

The CIWS receives information on the current state of the traffic light through the signal controller and transmits the information to the on-vehicle device, so that the vehicle driver can recognize the current signal state of the traffic light installed at the intersection.

In addition, the CIWS transmits traffic light state information received by the roadside device through the signal controller and information on the time of the signal to the onboard device, and the onboard device transmits the traffic light state information and time information and the speed and position of the vehicle (vehicle). To determine whether there is a possibility of a signal violation when the vehicle enters the intersection and outputs a warning to the driver. Thus, the driver can know in advance whether there is a possibility of a signal violation, thereby reducing the risk of a traffic accident at the intersection.

However, the conventional CIWS only receives information from the signal controller and uses the received information to inform the driver of the current state of the traffic light or to warn the driver of the risk of signal violation. It does not play an active role of controlling a signal controller based on information exchanged between on-vehicle devices.

The present invention has one aspect to improve the smooth traffic flow and traffic accident prevention function by allowing the signal controller to be controlled using CIWS.

1 is a block diagram of a traffic signal control system according to an aspect of the present invention.

As shown in FIG. 1, a traffic signal control system according to an aspect of the present invention includes a vehicle-mounted device (not shown) mounted on a vehicle 110,

roadside devices

120 and 130 installed around an intersection, and a signal controller ( 140).

The on-vehicle device transmits an entrance request signal for entry into an intersection to the roadside device 120 installed near the intersection, and receives a result of whether the entry is allowed from the roadside device 120 in response to the entry request signal.

When the roadside device 120 receives the entry request signal from the on-vehicle device, the roadside device 120 allows entry to the intersection with the vehicle that has transmitted the entry request signal using the mode information of the traffic light installed at the intersection and information about other vehicles approaching the intersection. It decides whether or not to transmit the result, and transmits the result to the in-vehicle device which transmitted the entry request signal. Here, the mode information of the traffic light may be obtained from the signal controller 140. In addition, the information about the other vehicle may be information obtained directly from the on-vehicle device of the other vehicle, or information obtained from other roadside devices 130 in the vicinity, or directly obtained information and the surrounding roadside. It may also be a combination of information obtained from the device 130. At an intersection, as shown in FIG. 1, two or more roadside devices may be installed, or one roadside device may be installed in some cases. When one roadside device is installed, the roadside device covers all vehicles entering the intersection, so only vehicle information received from each vehicle may be used. However, when two or more roadside devices are installed, for example, roadside devices are installed at each access road, other roadside devices may be used to determine whether to permit entry by considering all vehicles entering the intersection through each driveway. Receive vehicle information. Here, the other vehicle information may include at least one of a time point at which an entry request signal is received from each vehicle, a speed and a location of each vehicle, a driving direction of the vehicle, and the like.

When the vehicle is allowed to enter the intersection at the entrance request signal, the roadside device 120 requests signal control necessary for entering the intersection of the vehicle having transmitted the entrance request signal to the signal controller 140.

In FIG. 1, the roadside device is illustrated as having a separate signal controller, but the present invention is not limited thereto, and the roadside device may be integrated with the signal controller.

2 is a block diagram showing a detailed configuration of a roadside apparatus according to an aspect of the present invention.

Roadside device 120 according to an aspect of the present invention may include a first communication interface 210 for communication with the on-vehicle device and a control unit 220 for determining whether to allow entry to the vehicle requesting to enter the intersection. In addition, it may include a second communication interface 220 for communicating with the signal controller 140 and a third communication interface for communicating with the peripheral roadside device 130.

The first communication interface 210 may be implemented as a means for communication with the on-vehicle device, for example, according to a specification of dedicated short range communication (DSRC), which is short-range communication. DSRC is a communication standard designed to provide ITS (Intelligent Transport System) service through short-range dedicated communication between roadside devices and on-vehicle devices. It uses a frequency of 5Ghz band and has a data transmission rate of several hundred kbps.

The first communication interface 210 includes a receiver 212 and a transmitter 214, and the receiver 212 receives an entry request signal for requesting entry into an intersection from the on-vehicle device and transmits it to the controller 220. The transmitter 214 transmits a result of whether to allow the entry determined by the controller to the on-vehicle device.

When the controller 220 receives the entrance request signal from the on-vehicle device via the receiver 212, the controller 220 determines whether to allow the vehicle to enter the intersection based on the traffic light mode information and other vehicle information. When the entrance of the vehicle is allowed, the signal controller 140 requests a signal control necessary for the passage of the vehicle. Then, the determination result of whether to allow the entry is transmitted to the on-vehicle device through the transmitter 214.

For example, the control unit 220 allows the traffic lights installed in the driveway of the vehicle that has transmitted the access request signal to maintain the green signal for a predetermined time, and the traffic lights installed in the other driveway to maintain the red signal for the same time. In addition, if the driving direction of the vehicle is to turn left, the left turn signal is maintained for a certain time and the traffic lights of other access roads to maintain the red signal for the same time. To this end, the entry request signal may include information about the direction of travel of the vehicle. If the on-vehicle device is linked with the navigation system of the vehicle, information about the traveling direction of the vehicle at the intersection may be automatically inserted into the entry request signal using the route information set in the navigation system.

The traffic light mode may include a normal mode in which red, yellow, and green traffic lights are alternately turned on and off at predetermined time intervals, and a flashing mode in which a yellow traffic light continuously blinks. The controller 220 determines whether the traffic light mode is a normal mode or a blinking mode. To this end, the control unit 220 of the roadside device 120 receives the information on the traffic light mode from the signal controller 140. The traffic light mode information may be received by requesting the traffic light mode information to the signal controller at the time when the controller 220 receives the entrance request signal from the on-vehicle device, or in advance from the signal controller 140 when the traffic light mode is changed. It may be received and stored.

The control unit 220 allows the vehicle to enter the intersection at least when the traffic light mode information indicates the flashing mode, and when the traffic light mode information is not in the flashing mode, it is not allowed to enter the vehicle, that is, the current traffic light is not in the flashing mode. You will be notified to run.

Furthermore, when the traffic light mode information indicates the blinking mode, the controller 220 determines the priority of each of the vehicles using other vehicle information entering the intersection, and then allows the vehicle to enter based on the priority. Can be determined and the result sent to the on-vehicle device.

For example, if there are a plurality of vehicles entering the intersection through different access roads, the priority of each vehicle is determined, and only the high-priority vehicles are allowed to enter. Here, the controller 220 may determine a point in time at which an entry request signal is received from each vehicle, and give the highest priority to the vehicle having the fastest point in time. Or, the priority may be determined based on the time it takes each vehicle to enter the intersection. The time it takes for the vehicle to enter the intersection is the speed and location information of the vehicle received from the onboard device, where the location information may be the latitude or longitude coordinates of the vehicle or the distance from the vehicle to the intersection. Can be calculated using The speed and position information of the vehicle may be included in the entry request signal. However, the speed and the location information of the vehicle are not necessarily included in the entry request signal, and may be received from the on-vehicle device separately from the entry request signal. In CIWS, on-vehicle devices and roadside devices communicate continuously at regular time intervals (eg, 100 ms). Accordingly, the roadside device may receive a signal including the vehicle speed and location information from the on-vehicle device separately from the entry request signal, and calculate the time taken for the vehicle to enter the intersection based on this.

On the other hand, when there are a plurality of vehicles that continuously enter the intersection through the same driveway at short time intervals, it may be more efficient for the smooth traffic flow to allow the plurality of vehicles to pass continuously than to change the signal frequently. . Therefore, the controller 220 determines whether an entry request signal is received within a predetermined threshold time from a trailing vehicle of the same access road following the vehicle transmitting the access request signal, and if the entry request signal is received within the predetermined threshold time. The signal controller 140 may be requested to continuously maintain the signal state required for the passage of.

In addition, the control unit 220, in order to prevent the traffic accident in advance, if the vehicle received the entry impairment does not decelerate, even though the vehicle-mounted device that transmitted the entry request signal has been notified of the entry, the signal controller 140 You can request the necessary signal control to allow the log vehicle to pass first. As described above, since the roadside device and the vehicle-mounted device continuously communicate at regular time intervals, the roadside device may continuously check the speed of the vehicle, and determine whether the vehicle is decelerating by checking the speed change. .

The second communication interface 230 is a means for communicating with the signal controller 140 through a wired or wireless link. The second communication interface 230 receives traffic light mode information and the like from the signal controller 140, and controls the signal controller 140 under the control of the controller 220. Request signal control for vehicle traffic.

The third communication interface 240 is a means for receiving information about a vehicle entering an intersection from other roadside devices around or transmitting information about the vehicle collected by the roadside device to a nearby roadside device. This can be used.

3 is a flowchart schematically illustrating a traffic signal control method according to an aspect of the present invention.

First, the roadside device receives an entry request signal from the on-vehicle device (S310).

Upon receiving the entry request signal, the roadside apparatus determines whether to permit entry of the vehicle that has transmitted the entry request signal using the traffic light mode information and other vehicle information (S320).

If it is determined in step S320 to allow the entry of the vehicle, the roadside device requests a signal control for the traffic of the vehicle to the signal controller (S330), and whether or not to enter the vehicle-mounted device of the vehicle that transmitted the entry request signal The decision result is notified (S340). In the present specification, although the roadside device has been described as requesting signal control to the signal controller (S330) and notifying the determination result of whether to allow entry to the on-vehicle device (S340), this is an example for explanation of the present invention. It should not be construed that the present invention is limited only to the order thereof. That is, the determination result of whether to allow the entry in S320 is notified to the on-vehicle device first, and then requesting signal control to the signal controller is also included in the scope of the technical idea of the present invention.

Hereinafter, a specific embodiment of a traffic signal control method according to an aspect of the present invention will be described with reference to FIG. 4. However, these specific embodiments are only intended to help the understanding of the present invention, not intended to limit the scope of the present invention.

4 is an exemplary view for explaining in detail a traffic signal control method for an aspect of the present invention.

The roadside device receives an entry request signal from the on-vehicle device of the vehicle entering the intersection (S402).

When the entrance request signal is received from the on-vehicle device, the roadside device checks the traffic light mode information (S404). Here, the traffic light mode information may be obtained from the signal controller. The roadside apparatus may obtain and obtain traffic light mode information from the signal controller after receiving the entrance request signal, or obtain and store the signal from the signal controller before receiving the entrance request signal, that is, at the time when the mode of the traffic light is changed. There may be.

As a result of confirming the traffic light mode information, if the traffic light mode information is not in the blinking mode, the roadside device notifies the vehicle that has transmitted the entrance request signal (S406). That is, since the current traffic light mode operates in the normal mode, it instructs to drive safely according to the normal mode.

As a result of checking the traffic light mode information, when the traffic light mode is the blinking mode, the entry priority of each vehicle is determined using the other vehicle information (S408). For example, when the entry request signal is not received from another vehicle entering the intersection, the priority of the vehicle requesting the entry request signal is determined to be the highest. However, when an entry request signal is received from a plurality of vehicles, based on the time point at which the entry request signal is received from each vehicle, the time at which the entry request signal is received is determined to have the highest priority. Alternatively, priority may be determined based on the time it takes each vehicle to enter the intersection. As described above, the roadside device may receive the entry request signal including the speed information and the position information of the vehicle, or may receive the speed information and the position information of the vehicle through a signal separate from the entry request signal. Therefore, based on the speed information and the location information of the vehicle, it is possible to calculate the time it takes for each vehicle to enter the intersection, and give the highest priority to the vehicle having the shortest time.

If the priority is determined in S408, it is determined whether or not the priority of the vehicle which made the entry request is the highest (first priority), and if it is not the first priority, notifies the in-vehicle device that entry is impossible (S410). ).

On the other hand, if the priority of the vehicle making the entry request has the highest priority, the roadside device requests signal control necessary for the traffic of the vehicle to the signal controller (S412), and notifies the vehicle-mounted device of the vehicle to allow the entry request ( S414). However, as described above, it is not to be construed that the present invention is limited to the order, because it is described herein that the roadside device requests signal control to the signal controller and notifies the onboard device to allow the entry. It is to be understood that this is merely for the purpose of explanation of the invention.

On the other hand, when the roadside device implements the present invention in the order of notifying the vehicle-mounted device after entering the signal control request signal control to the on-vehicle device, not only the traffic light mode information confirmed in S404 and the priority determined in S408 The entry permission may be informed based on the reception of a response conforming to the signal control request from the signal controller. For example, when the traffic light mode is the flashing mode and the priority of the vehicle that has made the entry request is determined as the first priority, the roadside device requests the signal controller to control signals necessary for the traffic of the vehicle. However, if there is no response due to an abnormality of the signal controller or when receiving a response from the signal controller indicating that the signal control requested by the roadside device is impossible, the traffic light mode is flashing mode and the priority of the vehicle is first. Even in the ranking, by notifying the in-vehicle device can not enter, the risk of a traffic accident can be further reduced.

On the other hand, after notifying the vehicle-mounted device of the vehicle that has transmitted the entry request signal, the roadside device receives a signal for entering the signal within a predetermined threshold time from a following vehicle approaching the vehicle, and the roadside device signals to the signal controller. By requesting to maintain the state continuously, it may be possible to continuously pass the vehicle entering at a short interval at the same intersection (S416, S418).

In the embodiment of the present invention described above, it is determined whether to allow the entry based on the entry request from the on-vehicle device, and the signal controller is controlled according to the determination result. However, the present invention is not limited to controlling the traffic signal based on an entry request from the on-vehicle device, and various modifications may exist within the scope of the technical idea of the present invention.

For example, when the on-vehicle device enters a communication coverage capable of communicating with the roadside device, the on-vehicle device and the roadside device may continuously communicate at a predetermined time period. Therefore, when the on-vehicle device enters the communication coverage and becomes communicable with the roadside device, an embodiment in which the roadside device controls the traffic signal based on information such as a traffic light mode without a request from the on-vehicle device may be possible. This will be described in detail below.

5 is a view showing the configuration of a roadside device for controlling traffic signals according to another aspect of the present invention.

According to another aspect of the present invention, a roadside apparatus according to another aspect (the embodiment described above is referred to as a 'first embodiment' and the embodiment described herein is referred to as a 'second embodiment' for the purpose of distinguishing it from the above-described embodiment). 1 may include a communication interface 510, a traffic light state checking unit 520 and a control unit 530, and may further include a second communication interface 540 and a third communication interface 550. The first, second, and third communication interfaces 510, 540, and 550 correspond to the first, second, and third communication interfaces 210, 230, and 240 of FIG. 2, respectively, and thus, further description thereof is omitted. Next, the traffic light state checking unit 520 and the control unit 530 will be described in detail.

First, when the on-vehicle device enters into communication coverage capable of communicating with the roadside device, the traffic light state checking unit 520 checks the mode information of the traffic light installed at the intersection, and mounts the traffic light state information including the traffic light mode information. To the device. Through this, the driver of the vehicle may check the current signal state of the traffic light as well as the mode of the traffic light, that is, the normal mode or the flashing mode. In addition to the traffic light mode information, the traffic light state information may further include information on which signal is currently displayed in red, green, or yellow, and information on time of each signal.

When it is confirmed through the traffic light state confirming unit 520 that the traffic light mode is in the flashing mode, the controller 530 determines whether the vehicle is allowed to enter using other vehicle information. Here, the controller 530 may calculate the priority of each vehicle based on the time point at which the traffic light state information is transmitted to the on-vehicle device, and then determine whether to permit entry based on the priority. Or receiving information including a vehicle identification code, vehicle speed, and vehicle location from a vehicle entering communication coverage, determining priorities based on the time of receipt, or based on the vehicle speed and location, at which the vehicle is at an intersection. Priority may be determined based on the time it takes to enter, and then based on the priority, whether to allow entry may be determined.

On the other hand, the controller 530 requests the signal controller 140 necessary for the entry of the vehicle through the second communication interface 540 based on the entry permission determination. The result of whether the entry is allowed is transmitted to the on-vehicle device through the first communication interface.

The second embodiment of the present invention differs from the first embodiment only in that the traffic signal control of the roadside device is automatically started when the on-vehicle device enters the communication coverage without a request for entry from the on-vehicle device. Various features described in the embodiment may be applied to the second embodiment as it is.

When the on-vehicle device enters the communication coverage, the roadside device transmits the traffic light state information including the traffic light mode information to the on-vehicle device (S602, S604).

Thereafter, by checking whether the traffic light mode information indicates the blinking mode, when the blinking mode is indicated, it is determined whether the vehicle is allowed to enter using the other vehicle information (S606).

When the vehicle is allowed to enter, the controller requests a signal controller for controlling the traffic of the vehicle and transmits a result of determining whether to permit the vehicle to the on-vehicle device (S608 and S610).

On the other hand, although not shown in Fig. 6, between S602 and S604 or between S604 and S606, the roadside device is a vehicle identification code from the on-vehicle device, the speed of the vehicle and the position of the vehicle (latitude and longitude coordinates or distance to the intersection, etc.) The method may further include receiving vehicle information including at least one of a moving direction of the vehicle and the like. Such information may be used by the roadside device to determine whether the vehicle is allowed to enter. Alternatively, such vehicle information may be used to continuously monitor the current state of the vehicle by the roadside device being continuously received from the onboard device at a certain time period (eg, 100 ms).

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, although all of the components may be implemented in one independent hardware, each or all of the components may be selectively combined to perform some or all functions combined in one or a plurality of hardware. It may be implemented as a computer program having a. Codes and code segments constituting the computer program may be easily inferred by those skilled in the art. Such a computer program may be stored in a computer readable storage medium and read and executed by a computer, thereby implementing embodiments of the present invention. The storage medium of the computer program may include a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application claims priority under patent application number 119 (a) (35 USC § 119 (a)) to patent application No. 10-2012-0100090, filed with Korea on September 10, 2012. All content is incorporated by reference in this patent application. In addition, if this patent application claims priority for the same reason for countries other than the United States, all its contents are incorporated into this patent application by reference.

Claims

In the traffic signal control method using a road side equipment (RSE),

Receiving an entry request signal from an on-board equipment (OBE) mounted on a vehicle;

Determining whether to permit entry of the vehicle based on traffic light mode information and other vehicle information;

Requesting signal control necessary for passage of the vehicle to a signal controller when the vehicle is allowed to enter; And

Notifying a result of determining whether to permit entry to the on-vehicle device mounted on the vehicle;

Traffic signal control method comprising a.
The method of claim 1,

The determining of whether to allow the entry may include: allowing traffic to enter the vehicle when at least the traffic light mode information indicates a flashing mode.
The method of claim 2,

Determining whether to allow the entry,

Determining whether the traffic light mode information indicates the flashing mode;

If the traffic light mode information indicates the blinking mode, determining the entry priority of each vehicle using the other vehicle information; And

Determining whether to permit entry of the vehicle based on the entry priority;

Traffic signal control method comprising a.
The method of claim 3, wherein

The entrance priority is determined based on the time point at which the entry request signal is received from each vehicle.
The method of claim 3, wherein

The entry priority is determined based on the time it takes for each vehicle to enter the intersection.
The method of claim 5,

And the time taken to enter the intersection is calculated based on vehicle speed information and vehicle position information received from each vehicle.
The method of claim 3, wherein

And in the determining that the traffic light mode information indicates the blinking mode, notifying the in-vehicle device that entry is impossible when the traffic light mode information does not indicate the blinking mode.
The method of claim 1,

Informing the determination result,

And notifying the vehicle-mounted device that the vehicle-mounted device cannot enter or allow admission based on a result based on traffic light mode information and other vehicle information and a response from the signal controller to the signal control request.
The method of claim 1,

After requesting the signal control,

And when the entry request signal is received from a trailing vehicle approaching after the vehicle within a predetermined threshold time, requesting the signal controller to continuously maintain a signal state required for passage of the vehicle. Signal control method.
The method of claim 1,

The traffic light mode information is received from the signal controller, and the other vehicle information is collected from a nearby roadside device.
In roadside equipment (RSE) for traffic signal control,

A receiver configured to receive an entry request signal from an on-board equipment (OBE) mounted on a vehicle;

A control unit for determining whether to permit entry of the vehicle based on traffic light mode information and other vehicle information, and requesting a signal controller to control a signal necessary for passage of the vehicle when entry of the vehicle is permitted;

Transmitting unit for transmitting a result of determining whether to allow the entry into the on-vehicle device mounted on the vehicle

Roadside device comprising a.
The method of claim 11,

The controller may allow the vehicle to enter the vehicle when at least the traffic light mode information indicates a flashing mode.
The method of claim 12,

If it is determined that the traffic light mode information indicates the blinking mode, the controller determines entry priority of each vehicle using the other vehicle information, and determines whether to permit entry of the vehicle based on the entry priority. Roadside device characterized in that for determining.
The method of claim 13,

The controller determines the entry priority based on a time point at which the entry request signal is received from each vehicle.
The method of claim 13,

The control unit is a roadside device, characterized in that for determining the entry priority based on the time it takes for each vehicle to enter the intersection.
The method of claim 11,

The control unit, upon receiving the entrance request signal within a predetermined threshold time from a following vehicle approaching the vehicle, requests the signal controller to continuously maintain the signal state required for the traffic of the roadside. Device.
The method of claim 11,

The access request signal is a roadside device characterized in that it comprises vehicle speed information and vehicle location information.
The method of claim 11,

The access request signal is a roadside device, characterized in that it comprises information on the direction of travel of the vehicle.
The method of claim 11,

The controller, when the vehicle does not decelerate despite notifying the vehicle-mounted device of the vehicle that the vehicle cannot be entered, requests the signal controller to control signals necessary for the vehicle to pass first. Device.
In the traffic signal control method using a road side equipment (RSE),

Transmitting traffic light state information including traffic light mode information to an on-board vehicle (OBE) of a vehicle entering into communication coverage;

If the traffic light mode information indicates a flashing mode, determining whether to permit entry of the vehicle using other vehicle information;

Requesting signal control necessary for entry of the vehicle to a signal controller based on an entry permission decision; And

Transmitting a result of determining whether to allow the vehicle to enter the vehicle-mounted device;

Traffic signal control method comprising a.
The method of claim 20,

Prior to transmitting the traffic light status information, or between transmitting the traffic light status information and determining whether to allow the entry,

And receiving a signal including vehicle information from the on-board vehicle (OBE) of the vehicle entering the communication coverage.
In roadside equipment (RSE) for traffic signal control,

A first communication interface for transmitting and receiving information with the on-vehicle device of the vehicle entering the communication coverage;

A second communication interface for communicating with a signal controller;

A traffic light state checking unit which checks traffic light mode information and transmits traffic light state information including the traffic light mode information to the on-vehicle device through the first communication interface; And

When the traffic light mode information indicates a flashing mode, it is determined whether to permit the entry of the vehicle using other vehicle information, and based on the determination of the admission of the vehicle, signal control necessary for entry of the vehicle is performed. The control unit transmits a request control signal to the signal controller through the second communication interface, and transmits a result of determining whether to permit entry of the vehicle to the on-vehicle device through the first communication interface.

Roadside device comprising a.