KR102331250B1 - Traffic safety warning system for Cross Road using LED and Beam Projector - Google Patents

Abstract

The present invention relates to a traffic safety warning system for an intersection using an LED and a beam projector and comprises: a traffic light member installed adjacent to a crosswalk marked on a road to allow a pedestrian to cross the road and installed on both sides of the crosswalk to display a walking signal of a pedestrian and a driving signal of a vehicle; a light source member installed on the upper end of the traffic light member to illuminate the entire area of the crosswalk; and a boundary stone lighting member installed on a boundary stone of a right-turning road from the driver's viewpoint in an intersection so that a vehicle stops. Even if a pedestrian, etc. jaywalks over a crosswalk installed in an intersection, the lighting is continuously made by the light source member. Therefore, not only can the driver's field of vision be secured, but it is also possible to display a walking signal to a pedestrian by the light source member in addition to traffic lights of a crosswalk, thereby preventing a pedestrian from jaywalking.

Description

Traffic safety warning system for Cross Road using LED and Beam Projector

The present invention relates to an intersection traffic safety warning system using an LED and a beam projector, and more particularly, an LED and beam projector that can prevent a traffic accident in an intersection by giving a visual warning to a driver of an unrecognized situation in the intersection It relates to an intersection traffic safety warning system using

The government has implemented a series of policies to protect pedestrian safety for the transportation vulnerable by designating a child protection zone from 1995, a senior protection zone from 2007, and a protection zone for the disabled in 2011. Regulations on Designation and Management of Protection Areas for the Elderly and Disabled” were enacted and unified.

The scope of the child protection zone is to designate a certain section of the road within a radius of 300 m centered on the main entrance.

Meanwhile, the number of traffic accidents involving children decreased by 4.2% from 16,542 in 2006 to 13,323 in 2011, but the number of traffic accidents in child protection zones increased by 18.4% from 323 in 2006 to 751 in 2011.

In addition, when looking at the results of analysis of traffic accidents in child protection zones from 2010 to 2011, it was analyzed that traffic accidents involving children by accident type had the highest number of traffic accidents while crossing, and that traffic accidents by law violation were due to driver's failure to drive safely. became

Despite the designation of the child protection zone (within a 300m radius of the center of the main entrance) and the installation of traffic safety facilities, the number of traffic accidents among children in the child protection zone is continuously increasing from 323 cases in 2006 to 751 cases in 2011 (increase rate of 18.4%). .

As a result of analyzing the causes of traffic accidents in child protection zones from 2010 to 2011, it was analyzed that the number of accidents during child crossing and the number of accidents due to driver's failure to drive safely were the highest.

The results of this analysis prove that the two biggest causes of traffic accidents in child protection zones are the reckless crossing of the road by children with low traffic safety awareness and the driver's insensitivity to safety.

However, even if children recklessly jump into the road, if the driver recognizes this in advance and can immediately stop the vehicle, traffic accidents can be prevented or damage can be minimized. do.

As for the existing traffic safety facilities, the existing traffic safety facilities installed in the child protection zone, such as traffic safety signs, road markings, speed prevention facilities, anti-skid facilities, and protective fences, provide information about what is happening in the protection zone. Information is not provided to the driver.

In addition to sidewalks and road ancillary facilities, the most representative safety facilities using information and communication technology include a vehicle speed warning system (DFS) and a crosswalk safety standby system. The characteristics of each system are as follows.

As shown in FIG. 1 , the vehicle speed warning system (DFS) expresses the speed of the vehicle detected by the vehicle detector as a text message to the driver.

As shown in FIG. 1, when a vehicle approaches, the vehicle speed warning system emits a radar wave, detects the vehicle speed by the reflected radar wave, and displays it once per second. When the vehicle exceeds the speed limit, the vehicle speed warning By blinking and displaying the speed of the vehicle on the display of the system, the driver is induced to decelerate the speed of the vehicle.

In addition, as shown in Figure 2, the crosswalk safety waiting device detects a pedestrian waiting at the crosswalk and provides a voice warning according to the crossing signal.

When a pedestrian enters a crosswalk in the state of a waiting signal, the crosswalk safety waiting device displays a warning broadcast to prevent pedestrians from crossing without permission.

However, similar to sidewalks and road ancillary facilities, the vehicle speed warning system (DFS) and the crosswalk safety waiting system do not provide the function of preventing traffic accidents by warning the driver of unexpected situations occurring in the intersection.

Therefore, there is a need to develop a powerful driver warning system that can overcome the limitations of existing traffic safety facilities that cannot provide drivers with unexpected situations at intersections.

For example, in Patent Document 1 below, 'a signal device for a crosswalk using an LED lighting' is disclosed.

The signal device for crosswalk using LED lighting according to the following Patent Document 1 blinks and operates simultaneously with the crosswalk signal light installed on the edge of the sidewalk where the crosswalk is displayed, and the LED lighting connected to the signal controller is installed so that it operates in conjunction with the road running signal light. In a signal device for a crosswalk using a crosswalk, it is connected to a traffic light control unit included in the signal controller to operate in conjunction with the crosswalk traffic light, and a plurality of LED lighting lights are divided into both sides along the crosswalk and buried.

The LED lighting lamp has a main body having a light source unit having an open upper surface and a substrate to which a plurality of LED modules are coupled, and a right walking guidance display unit for sealing the upper opening surface of the main body and guiding a pedestrian in the moving direction is formed on the surface A surface diffusion part is formed to irradiate light in a wide range so that the emitted light does not disperse the driver's gaze and is recognized only by pedestrians. Auxiliary lighting irradiators are formed on the cover to irradiate the illumination light of the flower shape or safety phrase.

The auxiliary illumination irradiator protrudes at a predetermined interval from the upper surface edge of the surface light emitting cover to irradiate the light irradiated from the light source unit inside the body to the surface emitting central edge, and a refractive irradiator is formed, and the refraction irradiator is a figure or character on one surface An irradiation pattern surface is formed with the formed light-transmitting surface and a non-transmissive surface for blocking light, and a reflective surface for refracting and irradiating the light supplied from the light source is formed on the other side.

A lighting induction part is formed on the upper body to supply light to the refraction irradiation part, and a plurality of refractive reflectors for refracting and supplying the light of the light source part are coupled to the lighting induction part, and an auxiliary light source part composed of an LED module to the lighting induction part It is configured to supply light to any one of the configured ones.

Patent Document 2 below discloses a 'crosswalk lighting device'.

The crosswalk lighting device according to Patent Document 2 below is provided with a block accommodating groove formed low to enter from the road surface at each road marking seat painted with a white pigment of the crosswalk, and a plurality of LEDs fitted into the block accommodating groove to match the road surface Consisting of blocks, each LED block is made of transparent urethane with good cushioning and friction properties, and a circuit board having a plurality of LEDs is provided side by side in the longitudinal direction inside the LED block, and the circuit board is in the block receiving groove In the crosswalk lighting device provided with a heat dissipation member in contact with the ground of the floor, the LED block has a plurality of pairs of the circuit board and the heat dissipation member arranged in the width direction, and between each circuit board is integrated with the LED block A side wall is formed to support the load when a vehicle or a person steps on and passes through the LED block, and the LED block has a heat dissipation space with an open bottom so that each heat dissipation member faces the ground, and each heat dissipation member has a corresponding A horizontal portion on which a circuit board is placed, is provided at both ends of the horizontal portion and protrudes upward and downward of the horizontal portion, and a lower portion is composed of a vertical portion placed on the floor of the block accommodating groove.

Republic of Korea Patent Registration No. 10-1335802 Korean Patent Publication No. 10-2018-0096400 Korean Patent Publication No. 10-2019-0132305

It is an object of the present invention to solve the above problems, and to prevent traffic accidents in the intersection in advance by providing a visual warning to drivers and pedestrians of unrecognized situations in the intersection by using LED light-expanding technology. It is to provide an intersection traffic safety warning system using LED and beam projectors.

Another object of the present invention is an intersection traffic safety warning system using an LED and a beam projector to illuminate the crosswalk to a smartphone user to ensure safety by using an LED and a beam projector at the time of a walking signal (green signal) in a crosswalk is to provide

Another object of the present invention is to illuminate the crosswalk boundary line to smartphone users by using LED and beam projector when waiting signal (red signal) at crosswalk to ensure safety at intersection traffic safety using LED and beam projector to provide a warning system.

Another object of the present invention is to illuminate the crosswalk at the time of the pedestrian's walking signal so that the pedestrian can visually recognize that it is a walking signal, as well as the LED and It is to provide an intersection traffic safety warning system using a beam projector.

Another object of the present invention is to provide an intersection traffic safety warning system using an LED and a beam projector that illuminates the entire right turn road when the green signal of the crosswalk of the right turn line based on the driver is changed so that the driver can visually recognize that it is a walking signal. will do

In order to achieve the above object, the intersection traffic safety warning system using the LED and the beam projector according to the present invention is installed adjacent to the crosswalk marked on the road so that the pedestrian can cross the road, the pedestrian's walking signal and the vehicle Traffic light members 110 respectively installed on both sides of the crosswalk to display the driving signal of; a light source member 130 installed at the top of the traffic light member 110 to illuminate the entire area of the crosswalk; and a boundary stone lighting member 150 installed on the boundary stone of the right-turning road based on the driver in the intersection so that the vehicle is stopped.

The light source member 130 is installed on the traffic light member 110 to illuminate the entire area of the crosswalk, and the light source member 130 is illuminated with the same color according to the signal from the traffic light member 110 . It is characterized in that it is illuminated.

When the signal of the crosswalk is green by the traffic signal controller, the light source member 130 is lit in green so that it can be recognized that it is a walking signal to drivers and pedestrians, and the light source member 130 is turned on by the traffic signal controller. When the signal of the crosswalk is red, it is characterized in that it is turned on at the boundary line of the crosswalk in red so that pedestrians can recognize that it is a stop signal.

The boundary stone lighting member 150 is composed of a plurality of boundary stones 151 that can be installed variably according to the width of the road, and the boundary stone 151 has an LED panel 153 in which lights are turned off by a traffic signal controller. It is characterized in that it contains;

A boundary stone groove 152 is formed on one side of the boundary stone member 150 so as to be located in front of the right turn in the driving direction of the vehicle, and the boundary stone groove 152 has an LED panel 153 in the horizontal or vertical direction. ) is installed, and a protective case installed on the upper surface of the boundary stone groove 152 to protect the LED panel 153; characterized in that it includes a.

The boundary seat lighting member 150 is lit so that the driver can stop the vehicle by turning on the LED panel 153 in red when the signal of the driver-based right-turn crosswalk is green according to the signal of the traffic signal controller. When the signal of the driver-standard right-turn crosswalk is red according to the signal from the signal controller, the LED panel 153 is turned off so that the driver can drive the vehicle.

As described above, according to the intersection traffic safety warning system using the LED and the beam projector according to the present invention, even if a pedestrian or the like crosses the crosswalk installed in the intersection without permission, the lighting is continuously made by the light source member. Not only can visibility be secured, but also pedestrian signals can be displayed by the light source member in addition to the crosswalk signal light, thereby preventing pedestrians from crossing the road.

According to the intersection traffic safety warning system using the LED and the beam projector according to the present invention, it is possible to grasp the traffic signals of vehicles and pedestrians even by the walking signal by the light source member and the lighting from the boundary seat to the driver, and to prevent traffic accidents in the intersection. This has the effect of reducing the economic loss caused by traffic accidents.

1 is a schematic diagram schematically showing a conventional vehicle speed warning system;
2 is a schematic diagram schematically showing a conventional crosswalk safety waiting device;
3 is a three-dimensional view showing an intersection in which an intersection traffic safety warning system using an LED and a beam projector is installed according to a preferred embodiment of the present invention;
4 is a partially enlarged three-dimensional view showing an intersection where an intersection traffic safety warning system using an LED and a beam projector is installed according to a preferred embodiment of the present invention;
5 is a three-dimensional view showing a boundary stone lighting member of an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention;
6 is a plan view showing a boundary stone lighting member of an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention;
7 is a three-dimensional view showing an intersection traffic safety warning system using an LED according to a preferred embodiment of the present invention;
8 is a plan view showing an intersection traffic safety warning system using an LED according to a preferred embodiment of the present invention;
9 is a view showing an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention;
10 is a view showing an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily implement them.

However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text.

For example, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea, because the embodiments are capable of various modifications and may have various forms.

In addition, the scope of the present invention should not be construed as being limited thereby because the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects.

In the present specification, the present embodiment is provided to complete the disclosure of the present invention, and to completely inform those of ordinary skill in the art to the scope of the present invention. And the invention is only defined by the scope of the claims.

Thus, in some embodiments, well-known components, well-known operations, and well-known techniques have not been specifically described to avoid obscuring the present invention.

Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

An intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention is installed on both left and right sides of a crosswalk marked on the road so that a pedestrian can cross the road, and displays the pedestrian's walking signal and the vehicle's driving signal. A traffic light member 110 installed on both sides of the crosswalk so that the light member 110 is installed on the upper end of the traffic light member 110 so as to illuminate the entire area of the crosswalk. 130, and a boundary stone lighting member 150 that is lit in red so that the driver can understand that the right-turn crosswalk is a walking signal to the driver when the signal of the right-turn crosswalk is green when the vehicle turns right.

The intersection traffic safety warning system according to an embodiment of the present invention illuminates the crosswalk like a walking signal, so that pedestrians and drivers can see the light irradiated on the crosswalk in addition to the traffic signal to understand the walking signal as well as the boundary stone 151 ), by illuminating the opposite light to the signal of the crosswalk on the right-turning road based on the driver's standards, it increases visibility to pedestrians and drivers in addition to the signal from the signal, as well as the crosswalk and the lights on the road to prevent traffic accidents.

3 is a three-dimensional view showing an intersection where an intersection traffic safety warning system using an LED and a beam projector is installed according to a preferred embodiment of the present invention, and FIG. 4 is an intersection using an LED and a beam projector according to a preferred embodiment of the present invention. It is a partially enlarged three-dimensional view showing an intersection where a traffic safety warning system is installed, and FIG. 5 is a three-dimensional view showing a boundary stone lighting member of an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention, FIG. 6 is a plan view showing a boundary stone lighting member of an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention.

As shown in FIGS. 3 to 6 , lanes in which vehicles travel are marked on the road, and crosswalks are marked so that pedestrians can cross the road. A traffic light member 110 that displays so that a pedestrian can pass a crosswalk is installed together with the traffic light installed.

The traffic light member 110 is spaced apart from the crosswalk by a predetermined distance and is installed adjacently, and the traffic light member 110 has signal lamps 112, 113, 114 for displaying a walking signal so that a pedestrian can pass the crosswalk. , 115 is installed on the post 111 .

The post 111 includes a first signal lamp 112 for displaying green, a second signal lamp 113 for displaying orange, a third signal lamp 114 for displaying red, and a fourth arrow indicating left turn. Signal lamps 115 are installed respectively.

These signal lamps 112 , 113 , 114 , and 115 are controlled by a traffic signal controller (not shown), and are interlocked with traffic lights indicating driving and stopping to vehicles traveling on the road.

A light source member 130 for illuminating a crosswalk is installed at the upper end of the traffic light member 110 . When the signal of the crosswalk is green by the traffic signal controller, the light source member 130 is turned on in green toward the crosswalk so that the driver and pedestrian can understand that it is a walking signal.

In addition, when the signal of the crosswalk is red by the traffic signal controller, the light source member 130 is turned on in red toward the crosswalk so that the pedestrian can understand that it is a stop signal.

The light source member 130 is installed on the upper end of the post 111 to illuminate the entire crosswalk, and the light source body 132 is installed on the post 111 to a desired height and toward the crosswalk. A frame 131 is installed.

In addition, a light source 132 interlocked with a traffic signal controller is installed in the frame 131 .

The light source body 132 is interlocked with the traffic light members 110 installed on both sides or one side of the crosswalk. The member 130 illuminates the green light, and as the third signal lamp 114 is turned on, the light source member 130 illuminates the red light.

This allows pedestrians to see traffic signals more clearly by illuminating the area around the crosswalk in addition to the signal lamps 112, 113, 114, and 115 to pedestrians and drivers, thereby increasing the visibility according to traffic signals to pedestrians and drivers. there will be

That is, due to the use of smartphones, the pedestrian attempts to walk without looking at the signal lamps 112, 113, 114, and 115 installed in the crosswalk. Even if you do not look at (112, 113, 114, 115), it is possible to grasp the walking signal according to the lighting around the crosswalk.

When the first signal lamp 113 displaying green is a walking signal, the pedestrian can recognize that it is a walking signal regardless of the first signal lamp 113 that emits a green light source, and the driver illuminates the crosswalk. By the light source of the light source body 132, the walking signal can be recognized more clearly and immediately.

When the second signal lamp 112 displaying red is a stop signal, the pedestrian can immediately recognize that it is a stop signal according to the second signal lamp 112 emitting a red light source.

On the other hand, the light source member 130 may be made of an LED or a beam project capable of expressing lighting or images. That is, the light source illuminating the crosswalk may be a light source of the same color as the walking signal, and may be made of a light source or an image irradiated from a beam project if necessary.

In the beam project, a phrase or image to be promoted by a police station or the like is displayed on a crosswalk. As such, it should be understood that the light source member 130 includes not only an LED, a beam project, but also a projection device using a light source.

As shown in FIGS. 3, 5 and 6 , a boundary stone lighting member 150 is installed that can stop by recognizing in advance that it is a walking signal for a crosswalk in the right turn direction based on the driver in the intersection.

The boundary stone lighting member 150 is composed of a plurality of boundary stones 151 that can be installed variably according to the width of the road, and the boundary stone lighting member 150 has an LED panel that is turned off by a traffic signal controller ( 153) is provided.

The boundary stone groove 152 is formed by cutting a portion of the upper surface of the boundary stone 151 , and an LED panel 153 that turns off the light opposite to the walking signal when the driver makes a right turn is installed in the boundary stone groove 152 .

Of course, the LED panel 153 is made of a transparent synthetic resin material so that the light source irradiated from the LED panel 153 is exposed to the outside.

In addition, the boundary stone lighting member 150 is formed in a circular arc shape or a straight line shape so as to be fixed to the intersection of the road and the edge of the road, respectively.

The LED panel 153 is installed on the outside of the boundary stone 151 to be located on the right side of the driving direction of the vehicle, and the LED panel 153 is installed in the boundary stone groove 152 in a horizontal or vertical direction.

The LED panel 153 is turned on in red when the first signal lamp 113 among the signal lamps of the driver-based right turn crosswalk is green, and turns off when the third signal lamp 112 among the signal lamps is red.

That is, the LED panel 153 installed on the boundary seat 151 is interlocked with a traffic light indicating driving and stopping of the vehicle. .

7 is a three-dimensional view illustrating an intersection traffic safety warning system using LEDs according to a preferred embodiment of the present invention, and FIG. 8 is a plan view illustrating an intersection traffic safety warning system using LEDs according to a preferred embodiment of the present invention. .

7 and 8 are views schematically showing another embodiment of the present invention, in which a traffic light member 110 and a light source member 130 are installed, and boundary stone lighting members 150 are installed at both edges of the crosswalk, respectively. and, since it is the same as the above-described embodiment, a redundant description thereof will be omitted.

Next, an operation method of an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention will be described with reference to FIGS. 3 to 10 .

9 is a view showing an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention, and FIG. 10 is an intersection traffic safety warning system using an LED and a beam projector according to a preferred embodiment of the present invention. is a diagram showing

8 and 9 are views illustrating a state in which a crosswalk and a road are illuminated by the crosswalk traffic safety warning system of the present invention, and shows a case in which the crosswalk is green.

9 and 10, the light source body 132 of the light source member 130 installed on the post 111 as the first signal lamp 113 is turned on in green so that pedestrians can pass the crosswalk. lights up

At this time, the light source 132 is lit in green as in the signal of a crosswalk or intersection, and the crosswalk and its surroundings are illuminated in green so that a pedestrian can cross the crosswalk.

Accordingly, the pedestrian can visually check the illumination by the signal lamps 112 , 113 , 114 , 115 and the light source 132 , so Lights can be easily identified by pedestrians and drivers with the naked eye.

In addition, as shown in FIGS. 9 and 10 , the light source body 132 of the light source member 130 installed on the post 111 as the first signal lamp 112 is turned on in red so that pedestrians cannot pass the crosswalk. ) is lit.

At this time, the light source 132 is lit on the crosswalk boundary line in red identical to the signal of the crosswalk or intersection, and is illuminated in red so that the pedestrian cannot cross the crosswalk.

Accordingly, since the pedestrian can visually check the lighting by the signal lamps 112, 113, 114 and the light source 132, the pedestrian can see the lighting by the light source 132 instead of the signal lamps 112, 113, and 114. can be easily identified with the naked eye.

In addition, the driver can stop the driving of the vehicle by the light emitted from the LED panel 153 of the boundary seat lighting member 150 when the pedestrian signal of the crosswalk is red when turning right.

That is, as the LED panel 153 of the boundary stone lighting member 150 is illuminated in red, the driver can recognize that it is a signal for pedestrians to pass in the crosswalk.

In addition, the light source body 132 can be publicized by showing it to pedestrians and drivers by illuminating the crosswalk to be publicized by the National Police Agency, government offices, and the like.

Although the invention made by the present inventors has been described in detail according to the above embodiments, the present invention is not limited to the above embodiments and various modifications can be made without departing from the gist of the present invention.

110: traffic light member 111: holding
112: first signal lamp 113: second signal lamp
114: third signal lamp
130: light source member 131: frame
132: light source
150: boundary stone lighting member 151: boundary stone
152: boundary stone groove 153: LED panel

Claims (5)

Traffic light members 110 installed adjacent to the crosswalk marked on the road so that pedestrians can cross the road, respectively, installed on both sides of the crosswalk to display the pedestrian's walking signal and the vehicle's driving signal;
a light source member 130 installed at the top of the traffic light member 110 to illuminate the entire area of the crosswalk;
and a boundary stone lighting member 150 installed on the boundary stone of the right-turning road based on the driver in the intersection so that the vehicle is stopped.
The light source member 130 is installed on the traffic light member 110 to illuminate the entire area of the crosswalk, and the light source member 130 illuminates the same color according to the signal of the traffic light member 110 . Let this be reflected,
The boundary stone lighting member 150 is made of a boundary stone 151 divided into a plurality so that it can be installed variably according to the width of the road,
The boundary stone 151 includes an LED panel 153 whose light is turned off by a traffic signal controller.
The boundary stone 151 has a boundary stone groove 152 formed on one side of the boundary stone member 150 so as to be located in front of the right turn in the driving direction of the vehicle,
An LED panel 153 is installed in the boundary stone groove 152 in a horizontal or vertical direction,
Intersection traffic safety warning system using an LED and a beam projector, comprising a; a protective case installed on the upper surface of the boundary stone recess (152) to protect the LED panel (153).
According to claim 1,
When the signal of the crosswalk is green by the traffic signal controller, the light source member 130 is lit in green so that the driver and pedestrian can understand that it is a walking signal,
The light source member 130 is an intersection traffic using an LED and a beam projector, characterized in that it is lit on the boundary line of the crosswalk in red so that when the signal of the crosswalk is red by the traffic signal controller, it is a stop signal for pedestrians. safety warning system.
delete delete According to claim 1,
The boundary seat lighting member 150 is lit so that the driver can stop the vehicle by turning on the LED panel 153 in red when the signal of the driver-based right-turn crosswalk is green according to the signal of the traffic signal controller,
Crossroad traffic safety warning system using LED, characterized in that the LED panel (153) is turned off so that the driver can drive the vehicle when the signal of the driver-based right turn crosswalk is red according to the signal of the traffic signal controller.

Images