JP7165255B1 - Anti-slip road marking - Google Patents

Abstract

A road marking suitable for suppressing slip caused by surface freezing or surface wetness is provided. A road marking is represented by a dot pattern in which a plurality of dots 2 formed by applying or arranging a road marking material on a road surface 3 are gathered. In road markings represented by dot patterns, there is a difference in the amount of water remaining on the surface due to the difference in drainage between the marked road surface (dots 2) and the non-marked portion (road surface 3 such as asphalt or concrete). Since the frozen state differs due to the difference in thermal physical properties, the effect of suppressing uniform freezing of the range including the plurality of dots 2 can be expected. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to road markings suitable for suppressing slip caused by surface freezing and surface wetness.

In snowy and cold regions, road markings may become significantly more slippery than non-marking areas due to surface freezing, and slip-and-fall accidents especially occur frequently at pedestrian crossings.

In the prior art, Patent Literature 1 discloses a road marking that has an anti-slip effect by providing unevenness on the surface of the road marking.

Japanese Utility Model No. 62-003815

On roads in snow-covered cold regions, snow melts due to the heat of vehicles running and daytime temperatures. Freezing and becoming slippery occur frequently. Moreover, even if the non-marked portion (asphalt or concrete surface) is not frozen, only the marked portion of the road is often frozen. Furthermore, most of the road markings are white, making it difficult to see the frozen state, and slipping and falling accidents occur frequently, especially at pedestrian crossings.

SUMMARY OF THE INVENTION The present invention provides a pavement marking that reduces slippage in such conditions of surface freezing and surface wetness.

A dot-shaped road marking 1 is assumed.

The main effect of the present invention is that the road marking is dot-shaped, and the difference in surface freezing conditions between the road marking part (dots 2) and the non-marking part (road surface 3 such as asphalt or concrete) is used to realize a plurality of By suppressing the uniform freezing of the range including the dots 2, the effect of suppressing slippage is exhibited.

In the dot-shaped road marking 1, there is a difference in water drainage between the road marking portion (dots 2) and the non-marking portion (road surface 3 such as asphalt or concrete). Since the frozen state differs due to the difference in physical properties, the effect of suppressing uniform freezing of the range including the plurality of dots 2 can be expected.
In addition, in the dot-shaped road marking 1, the surface area of each dot 2 is smaller than that of a normal road marking. Since it is easy to freeze, it can be expected to have the effect of making the road marking surface less likely to freeze.

Although the road marking disclosed in Reference 1 has convex portions such as dots on the surface of the road marking, both the convex portions and the non-convex portions are made of the same material, and there is no difference in drainage or heat between the convex portions and the non-convex portions. Since the difference in physical properties is smaller than that of the present invention, the effect of suppressing uniform freezing of the road marking surface in the range including a plurality of convex portions is not as great as that of the present invention.

The dot-shaped road marking 1 not only has the effect of preventing uniform freezing of the range including a plurality of dots 2, but also has the effect of suppressing slippage due to the thick edges of the dots 2, and is more general than the road marking. A non-marked portion with a high coefficient of friction can also be expected to have a slip-suppressing effect due to the contact of a portion of the vehicle tire or the sole of the shoe.

It is a cross-sectional perspective view of a dot-shaped road marking. It is a top view of the example (crosswalk) of the dot-shaped road marking. FIG. 10 is a perspective view of an example of a construction method for dot-shaped road markings;

A dot-shaped road marking 1 is assumed.

FIG. 2 shows an embodiment of a dot-shaped road marking 1, but the size, thickness, shape and pattern of the dots 2 are not limited, and the size, thickness, shape and pattern of the dots 2 are not limited. However, if the size of the dot 2 is too large, it will slide on one dot 2, resulting in a decrease in the anti-slip effect. If the thickness is too thin, the durability decreases. If the pattern density of the dots 2 is too dense or the size of the dots 2 is too small, the workability decreases depending on the construction method. If the shape of the dots 2 is rectangular, the workability decreases. The size, thickness, shape, and pattern of the dots 2 should be determined by considering factors such as the shape of the dots 2 affecting the construction method and workability, such as enabling construction by the following construction method.

An example of the construction method of the dot-shaped road marking 1 is shown below, but the construction method is not limited, and the construction method of the dot-shaped road marking 1 is not limited.
As an example of the construction method, there is a method in which the pavement markings are left in the form of dots by usually applying over a paper pattern (not limited to paper, but including iron plates, resin plates, etc.) with holes in the shape of a tod, and removing the paper pattern.
As another construction method example, although the shape of the dots 2 is limited to a rectangle, a method in which a plurality of slits 5 are provided in the marking material discharge port 4 of the road marking construction machine and the discharge of the marking material is performed regularly. (Fig. 3). Also, if the discharge of the marking material is automatically stopped according to the traveling distance of the construction machine, the construction becomes easier.

1 Dot-shaped road marking 2 Dot 3 Road surface 4 Marking material discharge port 5 Slit 6 Discharge stopping shutter

Claims (2)

A plurality of dots (2) formed by applying or arranging a road marking paint material on a road surface (3) are aggregated with a planar spread , and the plurality of aggregated dots (2) are each mutually A road marking that is represented by a dot pattern that has approximately the same shape . A crosswalk pavement marking marked with the pavement marking of claim 1.

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