A hidden island for reducing traffic accidents at a plane intersection in a rainy and snowy day, a plane traffic system including the hidden island, and a construction method

Abstract

The application relates to the technical field of road driving safety, and particularly discloses a hidden island for reducing traffic accidents at a plane intersection in rainy and snowy weather, a plane traffic system comprising the hidden island and a construction method, wherein the hidden island is located in the plane intersection range, and protrusions for providing friction for vehicles are distributed in the hidden island; the protrusions are distributed in a trend of getting higher from the edge of the hidden island to the inside. The protrusions are arranged in the plane intersection range, the protrusions provide certain friction for the turning vehicles sliding into the safety island due to insufficient lateral force, and the problem that traffic accidents are caused by insufficient lateral force of the vehicles in rainy and snowy weather is solved; furthermore, the protrusions are distributed in a trend of getting higher from the edge of the hidden island to the inside, the friction provided by the hidden island for the vehicles gets larger and larger from the edge to the inside, and the purpose of gradually slowing down the vehicles is achieved.

Description

Technical Field

[0001] This invention relates to the field of road traffic safety technology, specifically to an invisible island for reducing traffic accidents at intersections in rainy or snowy weather, a surface traffic system including the invisible island, and a construction method thereof. Background Technology

[0002] At road intersections, snow can accumulate on the road surface during rainy or snowy weather if the snow is not cleared or during the intervals between snow removals. This snow reduces the road surface friction coefficient, and when vehicles turn, the insufficient lateral force provided by the road surface can cause vehicles to slide towards the dividing island, which can lead to traffic accidents such as hitting guardrails or rear-end collisions. While prior art discloses the installation of safety islands on roads (see patent application CN110616608 A for details), which discloses a planar traffic system comprising multiple sets of roads and at least one safety island, the road surface of the safety island is identical to that of the multiple sets of roads. Therefore, it fails to address the problem that when vehicles turn due to snow accumulation, insufficient lateral force provided by the road surface causes vehicles to slide towards the traffic island, leading to traffic accidents. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention aims to provide a planar traffic system and construction method that includes an invisible island to reduce traffic accidents at intersections in rainy or snowy weather. This solution addresses the problem of frequent traffic accidents caused by lateral slippage of turning vehicles within the intersection area during rainy or snowy weather, thereby further reducing potential traffic accident hazards and lowering the traffic accident rate.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: Firstly, this invention provides an invisible island for reducing traffic accidents at intersections in rainy or snowy weather. The invisible island is located within the intersection area and contains protrusions that provide friction for vehicles. These protrusions increase in height from the edge of the island inwards. This invention addresses the problem of frequent traffic accidents caused by lateral vehicle slippage by providing friction for turning vehicles through the protrusions within the intersection area. Furthermore, the increasing height of the protrusions from the edge of the island ensures that the friction provided by the island gradually increases from the edge inwards, thus gradually slowing down the vehicle.

[0005] As a further technical solution, the distance between the boundary of the invisible island and the driving lane is greater than or equal to the width of the curb strip.

[0006] As a further technical solution, the protrusions are regularly distributed, and at least one protrusion can be pressed down across the width of a tire.

[0007] As a further technical solution, the protrusion is attached to the invisible island road surface and is in the shape of a circle, square, rhombus, star or other irregular shape. When its upper surface contacts the vehicle tire, it can provide a large friction force.

[0008] As a further technical solution, the maximum height of the protrusion is determined based on the height after compaction of the snowfall in the region.

[0009] As a further technical solution, the protrusions are arranged in a multi-step pattern from the edge of the invisible island inwards, and the protrusions at the same height form a ring.

[0010] Secondly, the present invention provides a planar traffic system, which includes the aforementioned invisible island for reducing traffic accidents at planar intersections in rainy or snowy weather. Specifically, the invisible island is located within the planar intersection area, and protrusions for providing friction for vehicles are distributed within the invisible island. The protrusions are distributed from the edge of the invisible island inwards in a trend of increasing height.

[0011] As a further technical solution, the plane traffic system includes multiple sets of roads and at least one hidden island, with the multiple sets of roads arranged around an intersection and the hidden island located at the intersection.

[0012] Thirdly, the present invention provides a construction method for an invisible island to reduce traffic accidents at intersections in rainy or snowy weather, comprising: Step (1): Draw the edge line of the outer curb of the hidden island according to the plan of the intersection; Step (2): Along the horizontal direction of the vehicle's driving direction, offset the edge line of the curb strip into the interior of the invisible island, and divide the area according to the offset distance L; Step (3): Set up auxiliary lines parallel to the curb and auxiliary lines perpendicular to the curb in each zone. The intersection of the auxiliary lines is the point where the protrusion is set. Step (4): Based on the regional snowfall statistics, calculate the height h of the compacted road surface under the maximum snowfall conditions; Step (5): Based on the h calculated in step (4) above, set the maximum height of the protrusion in the partition described in step (2). The maximum height of the protrusion is higher than the height h of the compressed snow. During the construction phase, the height of the protrusion is set to be greater than the height of the compressed snow. When the out-of-control vehicle slides into the invisible island, the protrusion can protrude out of the snow cover layer and contact the tire, providing friction to allow the vehicle to return to normal control. Step (6): Complete the construction of the protrusion at the intersection of the control lines described in step (3).

[0013] The beneficial effects of this invention are as follows: This invention addresses the problem of frequent traffic accidents caused by lateral vehicle slippage by setting protrusions within the intersection area of ​​the road surface. These protrusions provide friction for turning vehicles. Furthermore, the protrusions are distributed from the edge of the hidden island inwards in a trend of increasing height, so that the friction provided by the hidden island increases from the edge inwards, thus gradually slowing down the vehicle. Specifically, the outer ring has low protrusions, which play a dominant role in light snow; the inner ring has large protrusions, which cope with severe weather such as heavy snowfall; and the middle ring has a gradient height distribution to adapt to different snowfall thicknesses.

[0014] Furthermore, in snowy weather, after the snow is compressed by the tires, the tires cannot contact the road surface and therefore have no friction. The presence of the bulge, when the snow is compressed, the bulge is higher than the compressed snow surface, and can contact the tire to provide resistance. This is used to adjust the vehicle's posture or slow down, preventing the vehicle from entering the straight lane of the road it is about to enter and causing traffic accidents. Therefore, the maximum height of the bulge needs to be determined in combination with the snow thickness during the maximum snowfall to ensure that the bulge is higher than the compressed snow surface in snowy weather. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0016] Figure 1 This is a schematic diagram of an invisible island for reducing traffic accidents at intersections in rainy or snowy weather, provided in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the relationship between the hidden island and the right-turn lane provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the invisible island structure provided in Embodiment 1 of the present invention; Figure 4 This is a partial structural diagram of the invisible island provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the protrusion provided in Embodiment 1 of the present invention.

[0017] In the diagram: 1. Hidden island; 2. Right turn lane driving lane; 3. Right turn lane hard shoulder; 4. Right turn lane curb; 5. Inner edge of curb; 6. Outer edge of curb; 7. Hidden island first section; 8. Hidden island second section; 9. Hidden island third section; 10. Protrusion; 11. Cylindrical protrusion; 12. Hidden island pavement. Detailed Implementation

[0018] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. As described in the background section, while existing technologies disclose the installation of safety islands on roads, the road surface of these safety islands is identical to that of multiple road groups. Therefore, this cannot solve the problem of vehicles sliding towards the dividing island due to insufficient lateral force provided by the road surface when turning, caused by snow accumulation, leading to traffic accidents. Therefore, this invention provides an invisible island and a construction method to reduce traffic accidents at intersections in rainy or snowy weather, solving the problem of frequent traffic accidents caused by lateral slippage of turning vehicles within the intersection area in rainy or snowy weather, thereby further reducing traffic accident hazards in rainy or snowy weather and lowering the traffic accident rate.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1 In one embodiment of the present invention, such as Figure 1 - Figure 5 As shown, an invisible island 1 is proposed to reduce traffic accidents at intersections in rainy or snowy weather. The invisible island 1 is located within the intersection area. Within the invisible island 1, there are protrusions 10 that provide friction for vehicles. The protrusions 10 are distributed from the edge of the invisible island 1 inwards in a trend of increasing height. This invention addresses the problem of frequent traffic accidents caused by lateral vehicle slippage by setting protrusions 10 within the intersection area of ​​the road surface. These protrusions 10 provide a certain amount of friction for turning vehicles. Furthermore, the protrusions 10 are distributed from the edge of the hidden island inwards in a trend of increasing height, so that the friction provided by the hidden island increases from the edge inwards, thus gradually slowing down the vehicle. Specifically, the outer ring has low protrusions, which play a dominant role in light snow; the inner ring has large protrusions to cope with severe weather such as heavy snowfall; and the middle ring has a gradient height distribution to adapt to different snowfall thicknesses.

[0022] As a further technical solution, the distance between the boundary of the invisible island 1 and the driving lane is greater than or equal to the width of the curb. This is because, according to the definition of the curb in the highway engineering technical standards, the curb is used for vehicle trajectory error tolerance. When the driver dozes off or loses focus, the vehicle trajectory deviates from the lane and needs to be consistent with the state of the road surface when it enters the curb. Therefore, in this invention, the distance between the boundary of the invisible island 1 and the driving lane is greater than or equal to the width of the curb.

[0023] As a further technical solution, the protrusions 10 are regularly distributed, and at least one protrusion can be pressed down on one tire width, thereby ensuring that the vehicle tire has at least one protrusion to provide friction at any position on the invisible island, so as to stabilize the vehicle or decelerate it.

[0024] As a further technical solution, the protrusion 10 is attached to the invisible island road surface, and its shape is circular, square, rhomboid, star-shaped, or other irregular shapes. When its upper surface contacts the vehicle tire, it can provide high friction. The shape of the protrusion 10 can be selected as needed. Figure 5 The diagram shows a cylindrical protrusion 11; the cylindrical protrusion 11 is set on the invisible island road surface 12.

[0025] As a further technical solution, the maximum height of the protrusion 10 is determined based on the height of the compacted snowfall in the region. In snowy weather, after the snow is compressed by the tires, the tires cannot contact the road surface and therefore have no friction. With the presence of the protrusion, when the snow is compressed, the protrusion is higher than the compressed snow surface, so it can contact the tire to provide resistance, which is used for vehicle posture adjustment or deceleration, and to prevent the vehicle from entering the straight lane of the road it is going to enter and causing traffic accidents. Therefore, the maximum height of the protrusion needs to be determined in conjunction with the snow thickness during the maximum snowfall in the region to ensure that the protrusion is higher than the compressed snow surface in snowy weather.

[0026] As a further technical solution, the protrusions 10 are arranged in multiple rings from the edge of the invisible island inwards. Protrusions of the same height form a ring, with the height of the protrusions increasing towards the center. Since protrusions are consumables, higher protrusions are more prone to breakage and wear, while lower protrusions are more stable. Therefore, in this invention, the highest protrusion is at the innermost edge. The innermost protrusion primarily functions in blizzard conditions, while the outer ring protrusions function in other levels of snow, helping to stabilize the vehicle as much as possible around the perimeter. Lower protrusions offer better stability and durability, and when placed on the outer ring, they can stabilize the vehicle in light snow or rain. In blizzard conditions, the lower protrusions are covered by snow and cannot function, causing the out-of-control vehicle to slide inwards. In this case, the higher protrusions can function, providing friction to the vehicle tires and stabilizing the vehicle. Specifically, in this embodiment, as shown... Figure 3As shown, the protrusion 10 is arranged in three rings. The first ring corresponds to the first section 7 of the hidden island in the figure, the second ring corresponds to the second section 8 of the hidden island in the figure, and the third ring corresponds to the third section 9 of the hidden island in the figure. Each section has several protrusions. The height of the protrusions in the first section 7 of the hidden island is lower than that in the second section 8 of the hidden island, and the height of the protrusions in the second section 8 of the hidden island is lower than that in the third section 9 of the hidden island. This forms a structure with gradually increasing height, so that the friction force gradually increases from the boundary of the hidden island inward, thereby achieving the purpose of gradually decelerating the vehicle.

[0027] As a further technical solution, in this embodiment, such as Figure 3 As shown, the overall shape of the hidden island is similar to a right triangle, and the protrusions on the side closer to the left or right turn lane are arranged in an arc shape, while the protrusions on the side closer to the straight lane are arranged in a straight line.

[0028] Furthermore, the aforementioned protrusions can be made of two-component epoxy resin, epoxy resin bonded to basalt, epoxy resin bonded to ceramics, hot melt adhesive bonded to wear-resistant materials, or metal nails embedded in the road surface. The specific materials can be selected according to the actual site conditions.

[0029] Furthermore, the uppermost part of the aforementioned protrusion extends beyond the invisible island road surface. When there is snow on the road surface, if a vehicle loses control and enters the invisible island, the friction between the tires and the protrusion can provide steering force, allowing the out-of-control vehicle to correct its posture, thereby avoiding accidents such as rear-end collisions and collisions with guardrails.

[0030] Example 2 Based on the invisible island disclosed in Embodiment 1 for reducing traffic accidents at intersections in rainy or snowy weather, the present invention provides a plane traffic system that includes the invisible island described in Embodiment 1 for reducing traffic accidents at intersections in rainy or snowy weather.

[0031] As a further technical solution, the surface traffic system includes multiple sets of roads and at least one of the aforementioned invisible islands 1, with the multiple sets of roads arranged around an intersection and the invisible island 1 located at the intersection.

[0032] In this embodiment, as Figure 1 As shown, four sets of roads and four invisible islands 1 are set up, with the four sets of roads arranged around an intersection. Each set of roads includes a straight lane and a turning lane. The aforementioned invisible islands are formed between the two straight lanes and turning lanes at the intersection. In this embodiment, four invisible islands are formed; each invisible island has a protrusion 10; as shown... Figure 2 , Figure 3As shown, a partial structure of one of the road sections is displayed. Outside the right-turn lane driving lane 2 is the right-turn lane hard shoulder 3, and outside the right-turn lane driving lane 2 is the right-turn lane curb 4. The inner edge of the right-turn lane curb 4 corresponds to the inner edge of the curb 5, and the outer edge corresponds to the outer edge of the curb 6. In this invention, the maximum height of the protrusion 10 is determined based on the compacted height of the snowfall in the region. Parallel sections are set on the hidden island 1 along the normal turning trajectory of a vehicle. The innermost section has the highest protrusion 10, and the height of the protrusion 10 decreases sequentially towards the driving lane.

[0033] Example 3 Based on Embodiments 1 and 2, this embodiment provides a method for implementing an invisible island to reduce traffic accidents at intersections in rainy or snowy weather, as detailed below: Step (1): According to the traffic intersection design drawing, determine the edge line of the outer curb of the hidden island to ensure that the hidden island 1 is located within the intersection area; Step (2): Along the horizontal direction of the vehicle's driving direction, offset the edge line of the curb strip into the interior of the invisible island and divide it into sections according to the offset distance L; that is, according to the edge line of the driving lane, draw the edge line of the curb strip, set the width w, and offset it along the outer edge line of the curb strip into the interior of the invisible island to divide the invisible island into different sections.

[0034] Step (3): Set up auxiliary lines parallel to the curb and auxiliary lines perpendicular to the curb in each zone. The intersection of the auxiliary lines is the point where the protrusion is set; ensure that the width of the motor vehicle tire can press on at least one protrusion in each direction.

[0035] Step (4): Based on the regional snowfall statistics, calculate the thickness h of the compacted snow on the road surface under the maximum snowfall conditions; Step (5): Based on the h calculated in step (4) above, set the minimum height of the protrusions in the partition described in step (2); the protrusions exhibit a gradient distribution that continuously increases from the outside to the inside. The lower the protrusion, the better its stability and durability, but the lower the protrusion, the smaller the snowfall thickness it can adapt to; the higher the protrusion, the greater the snowfall thickness it can adapt to, and it can play a role even under heavy snowfall, providing friction for out-of-control vehicles and allowing them to regain their posture, but the higher the protrusion, the easier it is to break and damage. Therefore, the outer ring is equipped with low protrusions, which play a dominant role in light snow weather; the inner ring is equipped with high protrusions to cope with the severe weather of heavy snowfall; the middle ring has a gradient distribution of height, which is intended to adapt to different snowfall thicknesses. When there are no protrusions, there is friction between the tire and the road surface. The purpose of setting up protrusions is to use the protrusions to contact the tire and generate resistance. In snowy weather, after the snow is compressed by the tire, the tire cannot contact the road surface and there is no friction. The presence of the protrusions allows them to contact the tires and provide resistance when the snow is compressed. This resistance helps adjust the vehicle's posture or slow it down, preventing the vehicle from entering the straight lane of the road and causing traffic accidents. Therefore, the maximum height of the protrusions needs to be determined in conjunction with the snow thickness during the day's heaviest snowfall to ensure that the protrusions are higher than the compressed snow surface during snowy weather.

[0036] Step (6): The protrusion is constructed at the intersection of the control lines described in step (3). Protrusions will be set in different zones, with the innermost zone having the highest protrusion and the height of the protrusions in the direction of the adjacent driving lane decreasing.

[0037] Within each zone, auxiliary lines parallel to and perpendicular to the curb are set, and the intersection of the auxiliary lines is the point where the protrusion is set.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An invisible island for reducing traffic accidents at intersections in rainy or snowy weather, characterized in that, The hidden island is located within the plane intersection area, and protrusions for providing friction for the vehicle are distributed within the hidden island.

2. The invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in claim 1, characterized in that, The distance between the boundary of the invisible island and the driving lane is greater than or equal to the width of the curb strip, and the protrusions are distributed at the same height or in a trend of increasing height from the edge of the invisible island inward.

3. The invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in claim 1, characterized in that, The protrusions are regularly distributed, and at least one protrusion can be pressed down across the width of a tire.

4. The invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in any one of claims 1-3, characterized in that, The protrusions are attached to the invisible island road surface and are circular, square, rhomboid, star-shaped or other irregular shapes. When their upper surface contacts the vehicle tires, they can provide high friction.

5. The invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in any one of claims 1-3, characterized in that, The maximum height of the protrusion is determined based on the height of the compacted snow after the maximum snowfall in the region, and the maximum height of the protrusion must be greater than the height of the compacted snow after the maximum snowfall.

6. The invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in any one of claims 1-3, characterized in that, The protrusions are of equal height or arranged in a stepped pattern from the edge of the invisible island inwards, with protrusions of the same height forming a ring.

7. A planar transportation system, characterized in that, It includes the invisible island for reducing traffic accidents at intersections on rainy or snowy days, as described in any one of claims 1-6.

8. The planar transportation system as described in claim 7, characterized in that, The planar traffic system includes multiple sets of roads and at least one hidden island, with the multiple sets of roads arranged around an intersection and the hidden island located at the intersection.

9. The construction method of the invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in claim 1, characterized in that, include: Step (1): Determine the edge line of the outer curb of the hidden island according to the plan of the intersection; Step (2): Along the horizontal direction of the vehicle's driving direction, offset the edge line of the curb strip into the interior of the invisible island, and divide the area according to the offset distance L; Step (3): Set up auxiliary lines parallel to the curb and auxiliary lines perpendicular to the curb in each zone. The intersection of the auxiliary lines is the point where the protrusion is set. Step (4): Based on the regional snowfall statistics, calculate the height h of the compacted road surface under the maximum snowfall conditions; Step (5): Based on the h calculated in step (4) above, set the maximum height of the protrusion in the partition described in step (2); Step (6): Complete the construction of the protrusion at the intersection of the control lines described in step (3).

10. The construction method for the invisible island for reducing traffic accidents at intersections in rainy or snowy weather as described in claim 1, characterized in that, The maximum height of the protrusion is higher than the height h of the compressed snow.

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