WO2021172805A1

WO2021172805A1 - Attachable sign for road surface and road sign construction method using same

Info

Publication number: WO2021172805A1
Application number: PCT/KR2021/001991
Authority: WO
Inventors: 박성훈
Original assignee: 주식회사 아이제이산업
Priority date: 2020-02-24
Filing date: 2021-02-17
Publication date: 2021-09-02
Also published as: KR102145933B1

Abstract

The present invention relates to an attachable sign for a road surface and a method for constructing a road sign using same, and more particularly, to: an attachable sign for a road surface, which can be constructed by using a method of attaching various road signs, such as lanes or center lines, to the road surface while greatly improving visibility so as to be seen clearly by car drivers at night or in rainy weather, and can be easily and quickly constructed; and a method for constructing a road sign using same. The attachable sign for a road surface of the present invention comprises: a plate-shaped body formed of synthetic resin and having a thickness gradually decreasing from the front to the rear; and a reflective means that is provided on the front and rear, the left and right sides, and the top surface of the body, except for the bottom, and reflects light of a car.

Description

Attached sign for road surface and construction method of road sign using the same

The present invention relates to an attachment-type sign for a road surface and a method for constructing a road sign using the same, and more particularly, to provide visibility so that various road signs such as lanes and center lines can be easily seen by motorists at night or in rainy weather. It relates to an attachment-type sign for a road surface, which is easy and quick to construct because it can be installed by attaching it to the road surface while greatly improving it, and a road sign construction method using the same.

In general, road signs are formed on roads to inform the road users of matters to be careful of, regulations, and instructions for traffic safety by displaying them on the road surface with symbols, characters, lines, and the like.

A road lane, a typical example of a road sign, is necessary to promote the safety and smooth communication of road traffic. It provides the necessary visual information for

In the case of domestic and foreign lanes, driving lines are displayed in white, yellow, or blue, and each color can be distinguished during the daytime as well as at night.

In general, for lanes, a primer layer is first formed wider than the paint width of the lane, and then one layer or two or more paint layers are formed by mixing various synthetic resin paint mixtures and glass beads and pigments for reflecting the light emitted from the vehicle. After painting the layer, a process of randomly applying glass beads to the upper surface of the paint layer is performed.

As described above, the glass beads are randomly sprinkled on the paint for the lane or mixed with the paint for the lane for the construction of the lane. However, it is insufficient to provide visual information to the driver of the vehicle especially in rainy weather because the reflection effect by the glass beads scattered on the surface of the lane made of a plane is low.

In order to solve this problem, various types of signs installed on the road surface of the road have been developed. Although these signs have the advantage of slightly improving visibility at night or in rainy weather, they are complicated and time-consuming because they have to be dug in the road. In addition, since it protrudes a lot from the road surface, there is a problem in that a strong impact is transmitted when in contact with the wheel of the vehicle, thereby greatly reducing the riding comfort.

The present invention was created to improve the above problems, so that the vehicle driver can easily identify it even at night or in rainy weather, and at the same time, it can be installed in a way that is attached to the road surface, so that the construction is simple and fast, and the shock applied to the vehicle is reduced. It relates to an attachment-type sign for a road surface that can be minimized and a method for constructing a road sign using the same.

In order to achieve the above object, an attachment-type sign for a road surface of the present invention includes: a plate-shaped body formed of synthetic resin and gradually decreasing in thickness from front to rear; and reflecting means provided on the front and rear surfaces, left and right side surfaces, and upper surfaces except for the bottom surface of the body to reflect the light of the vehicle, wherein the reflecting means includes a binder layer formed on the surface of the body, and the binder layer A lower portion includes a reflective layer made of a plurality of beads buried in the binder layer, and a transparent cover layer formed to cover the upper portion of the reflective layer to prevent detachment of the beads.

The front surface of the main body is formed to be inclined at an angle of 30 to 50° with respect to the bottom surface of the main body.

It is attached to the road surface of the road, is coupled to the bottom surface of the main body, a buffer pad for absorbing the shock transmitted from the main body; is further provided.

In the lower part of the body, the front part of the body is in contact with the wheel of the car so that the front part can be tilted by inducing the deformation of the body to prevent the rear part of the body from being lifted when the load of the car is applied to the front part. A front deformation induction slit is formed, and the rear portion is in contact with the wheel of the vehicle to induce the deformation of the main body to prevent the front portion from being lifted when the load of the vehicle is applied to the rear portion of the vehicle so that the rear portion can be tilted. A rear deformation inducing slit spaced rearwardly from the front deformation inducing slit is formed in the lower part of the .

And a road sign construction method for achieving the above object comprises the steps of applying an adhesive to the road surface of the road to attach the sign; A curing step of curing the pressure-sensitive adhesive; includes, wherein the cover is formed of a) synthetic resin, and preparing a plate-shaped body whose thickness gradually decreases from the front to the rear, and b) the front surface excluding the bottom surface of the body and forming a binder layer by applying a binder to the rear surface, left and right both sides, and upper surface; c) spraying a plurality of beads on the binder layer to bury the lower portions of the beads in the binder layer to form a reflective layer; d) forming a transparent cover layer covering the upper portion of the reflective layer by applying a transparent coating agent on the upper portion of the reflective layer to prevent detachment of the beads.

As described above, according to the present invention, visibility can be greatly improved by forming the front surface of the sign on which the light of the vehicle is illuminated. Therefore, it is possible to prevent a traffic accident in advance because a car driver can easily identify it even at night or in rainy weather.

In addition, since the present invention can be constructed by attaching it to the road surface using an adhesive, the construction is very simple and fast.

In addition, the present invention can minimize the impact transmitted to the vehicle by forming the front surface of the sign to be inclined, thereby improving the riding comfort of the driver or occupant of the vehicle. In particular, when additional cushioning pads are installed, it is possible to effectively reduce the impact of the vehicle.

1 is a perspective view showing a state in which a sign is installed on a road surface of a road according to a first embodiment of the present invention;

Figure 2 is a perspective view showing the main body of the indicator applied to Figure 1,

Figure 3 is a cross-sectional view of the indicator applied to Figure 1,

Figure 4 is a cross-sectional view taken from the main part of Figure 3,

Figure 5 is a cross-sectional view for showing the action of the indicator applied to Figure 1,

6 is a plan view showing another state that the sign applied to FIG. 1 is installed on the road surface of the road;

7 is a plan view showing another state that the sign applied to FIG. 1 is installed on the road surface of the road;

8 is a plan view showing another state that the sign applied to FIG. 1 is installed on the road surface of the road;

9 is a cross-sectional view of a marker according to a second embodiment of the present invention;

10 is a perspective view showing the bottom surface of the main part of the indicator according to the third embodiment of the present invention;

11 is a cross-sectional view for showing the action of the marker according to the third embodiment of the present invention.

Hereinafter, an attachment-type sign for a road surface according to a preferred embodiment of the present invention and a road sign construction method using the same will be described in detail.

1 to 5 , an attachment-type sign 10 for a road surface according to an embodiment of the present invention includes a body 11 and a reflecting means formed on the body 11 .

The body 11 is formed in a rectangular plate shape. Since the body 1 is a part that comes into contact with the wheels of a vehicle, it is preferable to be formed of a synthetic resin having excellent strength and high durability. For example, injection or extrusion molding may be performed using a phenol resin, an acrylic resin, an ABS resin, a polyethylene resin, or the like.

The body 11 is formed such that the thickness gradually decreases from the front to the rear. Accordingly, the front side of the body 11 is high and the rear side is low, so that the upper surface 12 of the body 11 is inclined. Since the upper surface 12 of the main body 11 is inclined, it drains rainwater quickly in case of rain to prevent rainwater from accumulating in the upper part of the main body 11 .

In addition to the upper surface 12 of the main body 11, the front 13 and rear 14 and the left and right side surfaces 15 of the main body 11 are also inclined. And the bottom surface 16 of the body 11 is formed horizontally.

The front face 13 of the body 11 is preferably formed to be inclined at an angle of 30 to 50° with respect to the bottom face 16 of the body 11 . If the angle is less than 30 degrees, visibility will fall. And when the angle exceeds 50°, a strong impact is transmitted to the wheels of the car, reducing the riding comfort.

As described above, by forming the angle of the front surface 12 of the main body 11 to 30 to 50°, it is possible to improve visibility and reduce impact. When the sign 10 of the present invention is constructed on the road surface, the front surface 12 of the main body 11 faces an oncoming vehicle. Accordingly, the light of the vehicle is directly irradiated to the front surface 12 of the body 11 . Since the front side 12 of the body 11 directly irradiated with the light of the vehicle is erected obliquely toward the driver, visibility is greatly improved. And, as shown in FIG. 5 , since the front surface 12 of the body is formed to be inclined, the contact area between the vehicle wheel 100 and the front portion of the body 11 can be minimized when the vehicle wheel 100 passes through the body 11 . ) can prevent damage to the reflective layer formed on the front surface.

Since the rear surface 14 and the left and right side surfaces 15 of the main body 11 are also inclined, visibility can be improved no matter what direction the vehicle light shines on.

Reflecting means is provided in the body 11 to reflect the light of the vehicle.

The reflective means shown includes a binder layer 30 formed on the surface of the main body 11, and a reflective layer composed of a plurality of beads 31 sprayed on the binder layer 30 and buried in the binder layer 30 at the bottom, A transparent cover layer 33 formed to cover the upper portion of the reflective layer to prevent detachment of the beads 31 is provided.

The binder layer 30 is formed on the remaining surfaces except for the bottom surface of the body 11 . That is, the binder layer 30 is formed on the front surface 13 and the rear surface 14 of the main body 11 , the left and right side surfaces 15 , and the upper surface 12 .

The binder layer 30 is formed by applying a binder to the body 11 . The binder layer 30 may be formed to a thickness of 01 to 1 mm.

A polymer binder may be used as the binder. For example, an acryl-based, urethane-based, or epoxy-based binder may be used as the polymer binder. The polymer binder can be applied to either one-component or two-component type. As an example of a two-component polymer binder, a commercialized product (HiQ Zenith Cree HC-5210, Noroo Paint) can be purchased and used. The two-component polymer binder has fast curing and excellent bonding strength.

The reflective layer is formed on the binder layer 30 . The reflective layer is made of a plurality of beads 31 . The bead 31 may be formed of glass or a synthetic resin material. The bead 31 is made of a transparent spherical shape.

The lower portion of each bead 31 is buried in the binder layer 30 . To this end, the beads 31 are sprayed on the binder layer 30 before the binder layer 30 is cured. The lower portion of the sprayed beads 31 is buried in the binder layer 30 . When the binder layer 30 is cured in a state where the lower portion of the bead 31 is buried in the binder layer 30 , the bead 31 is strongly coupled to the binder layer 30 .

The transparent cover layer 33 is formed to cover the upper portion of the reflective layer. The transparent cover layer 33 is transparent so that external light can be incident on the beads 31 of the reflective layer. The transparent cover layer 33 may be formed by applying a coating agent on the reflective layer. A polymer coating agent may be used as the coating agent. Acryl-based, urethane-based, and epoxy-based binders may be used as the polymer coating agent. The polymer coating agent may use the same material as the polymer binder described above.

Since the transparent cover layer 33 covers the upper portion of the reflective layer, it is possible to effectively prevent the desorption of the beads 31 due to an external impact. Therefore, unlike the beads sprayed on the lane as in the prior art, in the present invention, detachment of the beads does not occur easily before the transparent cover layer is damaged.

The body 11 is attached to the road surface 3 of the road by an adhesive. For example, after forming the adhesive layer 9 by applying an adhesive to the road surface 3 of the road, the bottom surface of the main body 11 may be mounted on the adhesive layer 9 to be attached thereto.

Various types of known binders may be used as the pressure-sensitive adhesive. For example, a polymer binder may be used as the pressure-sensitive adhesive. As the polymer binder, an acryl-based, urethane-based, or epoxy-based binder may be used. The polymer binder can be applied to either one-component or two-component type. In addition, it goes without saying that a conventional primer or an asphalt crack repair material may be used as the pressure-sensitive adhesive.

Since the above-described attachment-type sign 10 for a road surface of the present invention can be easily identified by a motorist even at night or in rainy weather, a traffic accident can be prevented in advance. In addition, since the present invention can be constructed by attaching it to the road surface using an adhesive, the construction is very simple and fast. In addition, the present invention can minimize the impact transmitted to the vehicle by forming the front surface of the sign to be inclined, thereby improving the riding comfort of the driver or occupant of the vehicle.

As shown in FIG. 1, the attachment-type sign 10 for a road surface of the present invention is installed in front and behind a conventional lane 1 formed by applying a paint to improve visibility of the lane 1 .

In addition, as shown in FIG. 6 , the attachment-type sign 10 for a road surface of the present invention is installed at regular intervals in the center of the road as well as the lane 1 to improve the visibility of the center line 5 . In addition, as shown in FIG. 7 , the attachment-type sign 10 for a road surface of the present invention may be installed in front of the speed bump 7 to improve the visibility of the speed bump 7 . 7 shows a state in which a plurality of markers 10 are arranged in a line in front of the speed bump 7 and installed. In addition, it is possible to improve the visibility of the crosswalk 8 by installing the attachment-type sign 10 for the road surface of the present invention in front of the crosswalk 8 as shown in FIG. 8 .

And, unlike the above-described examples, it goes without saying that various road markings such as lanes and center lines may be replaced with the markings of the present invention.

On the other hand, another example of the attachment-type sign for a road surface according to the present invention is shown in FIG. 9 .

Referring to FIG. 9 , a buffer pad 20 coupled to the bottom surface of the main body 11 and absorbing the shock transmitted from the main body 11 is further provided.

The buffer pad 20 is coupled to the lower portion of the body 11 . Adhesion by an adhesive or heat-sealing method may be applied as a bonding method. In the illustrated example, an adhesive is applied to the upper surface of the buffer pad 20 to form an adhesive layer 25 , and then the body 11 is coupled to the adhesive layer 25 .

The buffer pad 20 is made of a plate-shaped square. The thickness of the buffer pad 20 may be 2 to 5 mm. The buffer pad 20 absorbs the shock transmitted from the main body 11 to protect the main body 11 and at the same time reduce the shock applied to the vehicle.

The buffer pad 20 may be formed of a flexible synthetic resin or high-durability natural or synthetic rubber.

On the other hand, another example of the attachment-type sign for a road surface of the present invention is shown in FIGS. 10 and 11 .

10 and 11, the front deformation induction slit 41 and the rear deformation induction slit 45 are formed in the lower portion of the main body 11. The front deformation induction slit 41 and the rear deformation induction slit 45 are spaced back and forth and formed side by side.

The main body 11 may be sequentially divided into a front portion (a), a central portion (b), and a rear portion (c) from the front. For example, based on the central portion (b) located on the central side of the main body 11, the portion located in front of the central portion (b) is the front portion (a), and the portion located in the rear of the central portion (b) is the rear portion (c). ) can be divided into

The front deformation induction slit 41 is formed at the boundary between the front portion (a) and the central portion (b), and the rear deformation induction slit 45 is formed at the boundary portion between the rear portion (c) and the central portion (b).

The front deformation inducing slit 41 and the rear deformation inducing slit 45 are formed as grooves of a certain depth on the bottom surface of the main body 11 . The front deformation induction slit 41 and the rear deformation induction slit 45 are formed long in the left and right direction. The longitudinal direction of the front and rear deformation induction slits 41 and 45 is a direction orthogonal to the running direction of the vehicle. The front deformation induction slit 41 and the rear deformation induction slit 45 are formed in a triangular cross section. The front deformation induction slit 41 is extended to a predetermined depth from the bottom of the body 11 and the first inclined portion 42 inclined in one direction, and the first inclined portion 42 bent at the end of the main body ( 11) is formed of a second inclined portion 43 extending to the bottom surface of the first inclined portion 42 and inclined so as to have a different inclination angle.

The first inclined portion 42 is formed to be longer than the second inclined portion 43 . And the angle θ1 of the first inclined portion 42 with respect to the bottom surface of the body 11 is formed to be smaller than the angle θ2 of the second inclined portion 43 with respect to the bottom surface of the body 11 . Accordingly, the second inclined portion 43 is rapidly inclined to be close to vertical, and the first inclined portion 42 is gently inclined.

The rear deformation induction slit extends to a certain depth from the bottom of the main body 11 and extends to the bottom of the body by being bent at the end of the third inclined portion 46 and the third inclined portion 46 inclined in one direction. The inclination part 46 and the fourth inclined part 47 are inclined so that the inclination angle is different.

The third inclined portion 46 is formed longer than the fourth inclined portion 47 . And the angle of the third inclined portion 46 with respect to the bottom surface of the main body 11 is formed to be smaller than the angle of the fourth inclined portion 47 with respect to the bottom surface of the main body 11 . Accordingly, the fourth inclined portion 47 has a rapidly inclined form, and the third inclined portion 46 has a gently inclined form. The third inclined portion 46 corresponds to the first inclined portion 42 , and the fourth inclined portion 47 corresponds to the second inclined portion 43 .

Prevents the rear portion (c) or the front portion (a) from being lifted by the aforementioned front and rear deformation induction slits 41 and 45.

For example, when the front portion (a) of the body 11 comes into contact with the wheel 100 of the vehicle as shown in FIG. 11 , the load of the vehicle is applied to the front portion (a). At this time, since the front part (a) is pressed, a force is applied to the rear part (c) in the lifting direction, and there is a fear that the rear part (c) is separated from the buffer pad 20 or the buffer pad 20 is separated from the road surface (3). . Therefore, when the front part (a) is configured to easily incline when the front part (a) comes into contact with the wheel 100 of the vehicle, it is possible to minimize the lifting force of the rear part (c). When the front portion (a) is in contact with the wheel 100 of the vehicle, deformation can be induced at the boundary between the front portion (a) and the central portion (b) by the front deformation inducing slit 41 . At the front deformation induction slit 41, the front part (a) is easily bent and the front part (a) is inclined toward the road surface.

The role of the rear deformation induction slit 45 is also the same. For example, when the wheel of a car passes through the front part (a) and the center part (b) and comes into contact with the rear part (c), the load of the vehicle is applied to the rear part (c). At this time, since the rear part (c) is pressed, a force is applied to the front part (a) in the direction in which it is heard, and there is a fear that the front part (a) is separated from the buffer pad 20 or that the buffer pad 20 is separated from the road surface (3). have. Therefore, when the rear part (c) is configured to easily incline when the rear part (c) comes into contact with the wheel of the vehicle, it is possible to minimize the lifting force of the front part (a). When the rear portion (c) is in contact with the wheel of the vehicle, deformation may be induced at the boundary between the rear portion (c) and the central portion (b) by the rear deformation induction slit (45). At the rear deformation induction slit 45, the rear portion c is easily bent and the rear portion c is inclined toward the road surface.

On the other hand, although not shown, an elastic bar that is elastically deformable may be inserted into the front and rear deformation induction slits 41 and 45 . The elastic bar has a triangular cross section and has the same shape as the front and rear deformation induction slits.

When the front part (a) comes into contact with the wheel of the car and the front part (a) is tilted and the wheel of the car passes through, the elastic force of the elastic bar inserted into the front deformation induction slit 41 is applied to the front part (a). It can be easily restored to its original position. The rear part (c) is also applied to the elastic force of the elastic bar inserted into the rear deformation inducing slit 45 after the wheel of the vehicle passes, so that the rear part (c) can be easily restored to its original position.

Hereinafter, an example will be described with reference to Figs.

First, a reflective layer is formed on the main body 11 to prepare a marker.

Specifically, the cover is a) a step of preparing a plate-shaped body 11 formed of synthetic resin and gradually decreasing in thickness from the front to the rear, and b) the front (13) and rear (13) excluding the bottom of the body (11). 14), forming the binder layer 30 by applying a binder to the left and right side surfaces 15 and the upper surface 12, c) spraying a plurality of beads on the binder layer 30 to form the beads on the binder layer 30 Forming a reflective layer by burying the lower portion of the poles 31, and d) forming a transparent cover layer 33 covering the upper portion of the reflective layer by applying a transparent coating agent on the top of the reflective layer to prevent detachment of the beads 31 obtained through the steps of

The body 11 can be made by injection molding or extrusion molding using a synthetic resin material.

A binder layer 30 is formed by applying a binder to the surface of the body 11 . The binder layer 30 may be formed to a thickness of 01 to 1 mm. And before the binder layer 30 is cured, the beads 31 are sprayed on the binder layer 30 to bury the lower portion of the beads 31 in the binder layer 30 to form a reflective layer. After forming the reflective layer, a coating agent is applied on the reflective layer to form the transparent cover layer 33 .

When the sign 10 is prepared as above, an adhesive is applied to the road surface 3 of the road to attach the sign 10.

After cleaning the road surface 3 at the position where the marker 10 is to be attached, an adhesive is applied to the road surface 3 to form an adhesive layer 9 . Then, the marker 10 is pressed against the adhesive layer 9 formed on the road surface 3 to attach the bottom surface of the buffer pad 20 to the adhesive layer 9 .

Next, the adhesive layer 9 is cured. It can be dried naturally by curing method. In addition, as a curing method, wind may be applied or light may be irradiated.

When the adhesive layer 9 is cured, the construction of the road sign is finally completed.

As described above, since the present invention can be constructed by attaching it to the road surface using an adhesive, the construction is very simple and fast.

On the other hand, as shown in FIG. 9 or FIG. 10 , it is of course possible to construct a road sign using a sign having a buffer pad attached to the lower part of the body.

In this case, in order to prepare the cover, after the transparent cover layer 33 is formed, the buffer pad 20 is attached to the lower part of the main body 11 using an adhesive. The adhesive layer 25 may be formed by applying an adhesive to the bottom surface of the main body, or the adhesive layer 25 may be formed by applying an adhesive to the upper surface of the buffer pad 20 . After the adhesive layer 25 is formed, the body 11 is superimposed on the buffer pad 20 and adhered.

When the sign is prepared in this way, an adhesive is applied to the road surface 3 of the road, the sign 10 is attached, and then the adhesive is cured.

1 to 5 were installed on the road surface of the asphalt road, and compared with the existing white lane, it is shown in FIG. 12 . While the conventional white lane hardly reflects the light of the car, it was confirmed that the sign of the present invention reflects the light of the car well and is clearly identified at night.

As mentioned above, although the present invention has been described with reference to one embodiment, it will be understood that this is only exemplary, and that various modifications and equivalent embodiments are possible therefrom by those of ordinary skill in the art.

The present invention can be used in the industry related to an attachment-type sign for a road surface and a method for constructing a road sign using the same.

Claims

a plate-shaped body formed of synthetic resin and gradually decreasing in thickness from the front to the rear;

and reflecting means provided on the front and rear, left and right both sides, and upper surface of the body except for the bottom surface to reflect the light of the vehicle; and

The reflective means is formed to cover the upper portion of the reflective layer, the reflective layer comprising a binder layer formed on the surface of the body, a plurality of beads sprayed on the binder layer and the lower part is buried in the binder layer, and the beads are detached. and a transparent cover layer to prevent

It further includes; a buffer pad attached to the road surface of the road and coupled to the bottom surface of the main body to absorb the shock transmitted from the main body;

In the lower part of the body, the front part of the body is in contact with the wheel of the car so that the front part can be tilted by inducing the deformation of the body to prevent the rear part of the body from being lifted when the load of the car is applied to the front part. A front deformation induction slit is formed in a direction orthogonal to the running direction of the vehicle, and the rear portion is in contact with the wheel of the vehicle to prevent the front portion from being lifted when the load of the vehicle is applied to the rear portion by inducing the deformation of the body A rear deformation inducing slit is formed in a lower portion of the main body so that the rear portion can be tilted and spaced apart from the front deformation inducing slit rearward in parallel,

The front deformation induction slit has a first inclined portion extending to a certain depth from the bottom of the main body and inclined in one direction, and the first inclined portion is bent at the end of the first inclined portion and extended to the bottom of the main body, and the inclination angle is different from that of the first inclined portion. An attachment-type sign for a road surface, characterized in that it consists of a second inclined part that is inclined to the road.
According to claim 1, wherein the front surface of the main body is an attachment-type sign for a road surface, characterized in that formed to be inclined at an angle of 30 to 50 ° with respect to the bottom surface of the main body.
an attachment step of applying an adhesive to the road surface of the road to attach a sign;

A curing step of curing the pressure-sensitive adhesive;

The cover is a) preparing a plate-shaped body formed of synthetic resin and gradually decreasing in thickness from the front to the rear, and b) applying a binder to the front and rear surfaces, left and right side surfaces, and the upper surface excluding the bottom surface of the main body. Forming a binder layer; c) spraying a plurality of beads on the binder layer to bury the lower portions of the beads in the binder layer to form a reflective layer; d) the reflective layer to prevent detachment of the beads Forming a transparent cover layer covering the upper portion of the reflective layer by applying a transparent coating agent on the upper portion of the

In the lower part of the body, the front part of the body is in contact with the wheel of the car so that the front part can be tilted by inducing the deformation of the body to prevent the rear part of the body from being lifted when the load of the car is applied to the front part. A front deformation induction slit is formed, and the rear portion is in contact with the wheel of the vehicle to induce the deformation of the main body to prevent the front portion from being lifted when the load of the vehicle is applied to the rear portion of the vehicle so that the rear portion can be tilted. A rear deformation induction slit is formed in a lower portion of the front deformation induction slit rearwardly spaced apart from the front deformation induction slit,

The front deformation induction slit has a first inclined portion extending to a certain depth from the bottom of the main body and inclined in one direction, and the first inclined portion is bent at the end of the first inclined portion and extended to the bottom of the main body, and the inclination angle is different from that of the first inclined portion. A road sign construction method of a road, characterized in that it consists of a second inclined portion inclined to the road.