Road traffic risk early warning system based on rainfall intensity change in rainy days

Abstract

The invention relates to the technical field of traffic control, in particular to a highway traffic risk early warning system based on rainfall intensity change in rainy days, which comprises an expansion module, a reminding module and a cloud, the road comprises roads and indicating lamps; a placement groove is formed in the road; the expansion module comprises a water-absorbing expansion rubber strip which is arranged in the placement groove and is provided with an expansion sensor; the reminding module comprises a pressure switch and a communication module, the pressure switch is arranged in the placement groove, and a gap is formed between the pressure switch and the free end; the rainfall intensity is calculated through expansion data of the expansion sensor, and the accuracy of calculation is judged after the rainfall intensity is compared and verified with rainfall data of a weather station around the water absorption expansion rubber strip once every minute; the stronger the rainfall is, the more obvious the early warning effect is, the rainfall intensity is calculated according to the expansion data of the expansion sensor, the traffic risk caused by the rainfall intensity is compared, researched and judged, and the indicator light gives out risk early warning; the pressure switch is matched with the indicating lamp to warn the position of the front vehicle or too much rainwater.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic control, and particularly relates to a highway traffic risk warning system based on the change of rainfall intensity on rainy days. Background Art

[0002] The road traffic volume is increasing continuously, but the driving safety problems on the highway are gradually emerging. Especially in rainy weather, a water film is generated on the road surface. At this time, the friction coefficient of the road surface is greatly reduced, and then the tires are prone to hydroplaning and skidding, and the driving safety is relatively low. The probability of vehicle skidding due to the water film, braking distance and other safety factors are closely related to the driving speed. Moreover, the rainfall intensity is proportional to the formation speed of the water film. The stronger the rainfall, the more critical it is to slow down. However, in many cases, drivers cannot feel the existence of the water film and are prone to ignore this problem, which may lead to accidents. Therefore, a highway traffic risk warning system based on the change of rainfall intensity is needed to forcibly remind drivers to slow down. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a highway traffic risk warning system based on the change of rainfall intensity on rainy days, which can forcibly remind drivers to slow down according to the change of rainfall intensity.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is as follows: A highway traffic risk warning system based on the change of rainfall intensity on rainy days is used to warn the vehicles driving on the highway. The vehicle is provided with a reminder device. The highway traffic risk warning system includes an expansion module, a reminder module and a cloud. The highway includes a road and an indicator light on the side of the road. A plurality of placement grooves perpendicular to the length direction of the road are arranged on the road surface of the road. The expansion module includes a plurality of water-absorbing and expanding rubber strips. The water-absorbing and expanding rubber strips are arranged in the placement grooves. One end of the water-absorbing and expanding rubber strip far from the roadside is fixed in the placement groove, and the other end is a free end. In the dry state, the upper surface of the water-absorbing and expanding rubber strip is parallel to the road surface. After the water-absorbing and expanding rubber strip absorbs water, it expands and protrudes out of the ground. The stronger the rainfall, the more water the water-absorbing and expanding rubber strip absorbs, and the more it expands and protrudes, and the greater the vibration when the vehicle passes by. The placement groove is inclined downward towards the free end. The number of the reminder modules corresponds to the number of the water-absorbing and swelling rubber strips. The reminder module includes a pressure switch and a communication module. The pressure switch is arranged in the placement groove near the free end, and there is a gap between the pressure switch and the free end. When it rains, after the gap is filled with rainwater and the vehicle passes through the placement groove, the water-absorbing and swelling rubber strip is extruded towards the gap to push the rainwater in the gap. The rainwater extrudes or the free end extrudes the pressure switch to control the indicator light to turn on and give a warning to the following vehicle. An expansion sensor is arranged in the water-absorbing and swelling rubber strip. The expansion sensor is electrically connected to the communication module. The cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity, and compares and verifies the rainfall data with the meteorological station around the water-absorbing and swelling rubber strip every minute to judge the accuracy of the calculation. If the accuracy is insufficient, it is corrected to give a warning to the prompting device of the vehicle about to pass through this road and / or control the indicator light to turn on.

[0005] Preferably, the vehicle further includes a locator. The cloud obtains the positioning information of the locator, and judges the driving direction of the vehicle according to the positioning information. The cloud locates the line where the vehicle is located according to the positioning information, obtains the weather change of the line where it is located, and sends it to the vehicle. If the weather change includes the change of rainfall intensity, a warning is sent to the vehicle in advance.

[0006] Preferably, the vehicle further includes an inputter, and the line is the path between the starting point and the destination obtained after inputting the starting point and the destination through the inputter.

[0007] Preferably, the road includes a surface course of fine-grained asphalt concrete, and the placement groove is opened on the fine-grained asphalt concrete layer.

[0008] Preferably, an expansion sensor is arranged in the water-absorbing and swelling rubber strip. The expansion sensor is electrically connected to the communication module. The cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity.

[0009] Preferably, the cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity and gives a warning to the prompting device of the vehicle about to pass through this road.

[0010] Preferably, the cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity, and compares and verifies the rainfall data with the meteorological station around the water-absorbing and swelling rubber strip every minute to judge the accuracy of the calculation. If the accuracy is insufficient, it is corrected to give a warning to the prompting device of the vehicle about to pass through this road and / or control the indicator light to turn on.

[0011] Preferably, the prompting devices of different vehicles communicate with each other through the cloud. The vehicle is equipped with a vibration sensor. When the vehicle runs over the water-swellable rubber strip that swells upon absorbing water, the vibration sensor of the vehicle is activated. After activation, it sends vibration information to the cloud through a prompting device, and the cloud sends the vibration information to the prompting device of the vehicle that is about to pass through this road.

[0012] Preferably, a sunscreen coating is provided on the upper surface of the water-swellable rubber strip.

[0013] Preferably, the indicator light is arranged towards the oncoming direction of the road, and the height of the indicator light is greater than or equal to 3m.

[0014] The beneficial effects of the present invention are as follows: When in the dry state, the upper surface of the water-swellable rubber strip is parallel to the road surface through the water-swellable rubber strip and the placement groove, which does not affect the driving of the vehicle in the dry state and can only be activated on rainy days. Once it rains, the water-swellable rubber strip absorbs water and swells, and the more water it absorbs, the greater it swells, playing the same role as a speed bump. Of course, the swelling also has a limit, and the stronger the rainfall, the more obvious the deceleration effect, that is, it reminds the driver to decelerate through the physical feeling, thereby improving the early warning effect; and the speed bump can also increase the contact area, and the raised part can also break the continuous water film, enabling the wheels to regain the grip, thereby ensuring the driving stability of the vehicle, killing two birds with one stone; the placement groove is inclined downward towards the free end, which can achieve rapid drainage and avoid misjudgment caused by the accumulated water after the rain stops; one end of the water-swellable rubber strip is fixed and the other end is the free end, and there is a gap between the pressure switch and the free end, and the gap forms a buffer space. In the case of light rain, the gap cannot be filled with rainwater, that is, there is no need for indicator light reminder in the case of light rain, and it also avoids mis-touching, or mis-touching caused by the rubber strip swelling due to other non-rainfall factors. The stronger the rainfall intensity, the easier it is to be filled. After the rainwater fills it, the vehicle squeezes the water-swellable rubber strip to expand horizontally to realize the transmission of the wheel energy and activate the pressure switch, or the water-swellable rubber strip expands and directly pushes open the pressure switch after swelling, so that the indicator light can warn the position of the vehicle in front or warn that the rain is too heavy to the following vehicle, avoiding the influence of low visibility due to heavy rain on the judgment of the following vehicle on the vehicle in front, thereby realizing early warning, which is also the second-level early warning; through the expansion sensor, the ratio between the water absorption amount and the swelling size of the water-swellable rubber strip 2 can be calibrated in advance, and the rainfall amount can be inversely deduced by the water absorption amount, and it can compare and verify the rainfall data with the meteorological station once every minute and then send out an early warning and / or control the indicator light to turn on to the prompting device of the vehicle passing through this road, realizing the three-level early warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a highway traffic risk early warning system based on the change of rainfall intensity on rainy days in a specific embodiment of the present invention; Figure 2Partial sectional view in the dry state of a highway traffic risk warning system based on the change of rainfall intensity on rainy days according to a specific embodiment of the present invention; Figure 3 is Figure 2 Schematic diagram of the state of the water-absorbing and expanding rubber strip after absorbing water after rainfall; Figure 4 Schematic diagram of the dry state of the placement groove of a highway traffic risk warning system based on the change of rainfall intensity on rainy days according to a specific embodiment of the present invention; Figure 5 Schematic diagram of the first water-absorbing state of the placement groove of a highway traffic risk warning system based on the change of rainfall intensity on rainy days according to a specific embodiment of the present invention; Figure 6 Schematic diagram of the second water-absorbing state of the placement groove of a highway traffic risk warning system based on the change of rainfall intensity on rainy days according to a specific embodiment of the present invention; Label description: 1. Highway; 11. Road; 12. Indicator light; 13. Placement groove; 14. Fine-grained asphalt concrete layer; 2. Water-absorbing and expanding rubber strip; 21. Free end; 3. Pressure switch; 4. Radio; 5. Interval. Specific embodiment

[0016] To describe in detail the technical content, achieved purpose and effect of the present invention, the following is described in conjunction with the embodiments and accompanied by the drawings.

[0017] Please refer to Figures 1 to 6 , a highway 1 traffic risk warning system based on the change of rainfall intensity on rainy days, used to warn vehicles driving on the highway 1, and the vehicle has a reminder device; the highway 1 traffic risk warning system includes an expansion module, a reminder module and the cloud; The highway 1 includes a road 11 and an indicator light 12 on the side of the road 11; a plurality of placement grooves 13 perpendicular to the length direction of the road 11 are arranged on the road surface of the road 11; The expansion module includes a plurality of water-absorbing and expanding rubber strips 2, the water-absorbing and expanding rubber strips 2 are arranged in the placement grooves 13, one end of the water-absorbing and expanding rubber strip 2 away from the roadside is fixed in the placement groove 13, and the other end is a free end 21; in the dry state, the upper surface of the water-absorbing and expanding rubber strip 2 is parallel to the road surface, and the water-absorbing and expanding rubber strip 2 bulges out of the ground after absorbing water. The stronger the rainfall, the more water the water-absorbing and expanding rubber strip 2 absorbs and the more it bulges out, and the greater the vibration when the vehicle passes by; the placement groove 13 is inclined downward towards the free end 21; The number of the reminder modules corresponds to the number of the water-absorbing and swelling rubber strips 2. The reminder module includes a pressure switch 3, a communication module, and a radio receiver 4. The pressure switch 3 is arranged in the placement groove 13 near the free end 21, and there is a gap 5 between the pressure switch 3 and the free end 21. When it rains, after the rainwater fills the gap 5 and the vehicle passes through the placement groove 13, the water-absorbing and swelling rubber strip 2 is squeezed to move towards the gap 5, pushing the rainwater in the gap 5. The rainwater squeezes or the free end 21 squeezes the pressure switch 3 to control the indicator light 12 to light up and give a warning to the following vehicle. The radio receiver 4 is communicatively connected to the cloud through the communication module. An expansion sensor is arranged in the water-absorbing and swelling rubber strip. The expansion sensor is electrically connected to the communication module. The cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity and compares and verifies the rainfall data with the meteorological station around the water-absorbing and swelling rubber strip every minute to judge the accuracy of the calculation. If the accuracy is insufficient, it is corrected to issue a warning to the reminder device of the vehicle about to pass through this road and / or control the indicator light to light up.

[0018] As can be seen from the above description, in the dry state, the upper surface of the water-absorbing and swelling rubber strip 2 is parallel to the road surface through the water-absorbing and swelling rubber strip 2 and the placement groove 13, and it can only be activated on rainy days and does not affect the driving of the vehicle in the dry state. Once it rains, the water-absorbing and swelling rubber strip 2 absorbs water and swells, and the more water it absorbs, the greater it swells, playing the same role as a speed bump. Of course, the swelling also has a limit. The stronger the rainfall, the more obvious the deceleration effect, that is, it reminds the driver to decelerate through the physical feeling, thereby improving the warning effect. And the speed bump can also increase the contact area, and the raised part can also break the continuous water film, enabling the wheels to regain the grip, thereby ensuring the driving stability of the vehicle, killing two birds with one stone. The placement groove is inclined downward towards the free end, which can achieve rapid drainage and avoid misjudgment caused by the accumulated water after the rain stops. One end of the water-absorbing and swelling rubber strip 2 is fixed, and the other end is the free end 21. There is a gap 5 between the pressure switch 3 and the free end 21, and the gap 5 forms a buffer space to avoid mis-touching, or mis-touching due to the swelling of the rubber strip caused by other non-rainfall factors. The stronger the rainfall, the easier it is to be filled. After the rainwater fills it, the vehicle squeezes the water-absorbing and swelling rubber strip 2 to expand laterally to realize the transmission of the wheel energy and activate the pressure switch 3, or the water-absorbing and swelling rubber strip 2 expands and directly pushes open the pressure switch 3. Then, the indicator light 12 can warn the following vehicle of the position of the vehicle in front or warn that the rain is too heavy, avoiding the influence of low visibility due to heavy rain on the judgment of the following vehicle about the vehicle in front, thereby realizing the warning, which is also the second-level warning. Through the expansion sensor, the ratio between the water absorption amount and the swelling size of the water-absorbing and swelling rubber strip 2 can be calibrated in advance, and the rainfall amount can be inversely deduced from the water absorption amount. And it can compare and verify the rainfall data with the meteorological station every minute to issue a warning to the reminder device of the vehicle passing through this road and / or control the indicator light to light up, realizing the three-level warning.

[0019] Further, the vehicle further includes a locator; The cloud obtains the positioning information of the locator, judges the driving direction of the vehicle according to the positioning information, locates the line where the vehicle is located according to the positioning information, obtains the weather change of the line where it is located, and sends it to the vehicle. If the weather change includes a change in rainfall intensity, a warning is sent to the vehicle in advance.

[0020] As can be seen from the above description, by obtaining weather changes in advance for forecasting, fourth-level early warning can be achieved.

[0021] Further, the vehicle further includes an inputter, and the line is the path between the starting point and the destination obtained after inputting the starting point and the destination through the inputter.

[0022] Further, the road 11 includes a topmost fine-grained asphalt concrete layer 14, and the placement groove 13 is opened on the fine-grained asphalt concrete layer 14.

[0023] As can be seen from the above description, by opening the placement groove 13 on the fine-grained asphalt concrete layer 14, the drainage effect of the placement groove 13 is similar to the road surface condition, and it will not cause the drainage to be too fast due to the depth of the placement groove 13 being too deep, for example, opening to the gravel layer, resulting in the inability to transfer the wheel energy and activate the pressure switch 3, and then causing the indicator light 12 to fail.

[0024] Further, the depth of the placement groove 13 is 2 - 3 cm, and the width is 2 - 3 cm.

[0025] As can be seen from the above description, with the depth of the placement groove 13 being 2 - 3 cm and the width being 2 - 3 cm, and the standard topmost fine-grained asphalt concrete layer 14 of the existing road 11 being 4 cm, it can ensure water storage while avoiding penetrating the fine-grained asphalt concrete layer 14; the rectangular placement groove 13 is also relatively easy to excavate.

[0026] Further, the reminder module further includes a radio, and the radio is communicatively connected to the cloud through a communication module; The cloud receives the audio from the road and the wheelbase of the vehicle collected by the radio, judges the sound interval generated when the front and rear wheels of the vehicle pass through the extrusion water-absorbing and expanding rubber strips respectively when passing through the road, calculates the speed of the vehicle through the wheelbase and the sound interval, and if the preset speed is exceeded, a warning is sent to the reminder device through the cloud.

[0027] Further, the reminder devices of different vehicles communicate with each other through the cloud; The vehicle is equipped with a vibration sensor. When the vehicle runs over the water-swellable rubber strip 2 that swells upon absorbing water, the vibration sensor of the vehicle is activated. After activation, it sends vibration information to the cloud through a prompting device, and the cloud sends the vibration information to the prompting device of the vehicle that is about to pass through this road 11.

[0028] As can be seen from the above description, through communication between different vehicles via the cloud, vehicle networking can be achieved for mutual reminders.

[0029] Furthermore, a sunscreen coating is provided on the upper surface of the water-swellable rubber strip 2.

[0030] As can be seen from the above description, through the sunscreen coating, the service life can be extended. At the same time, although the sunscreen effect is reduced when it swells on rainy days, there is no sun, so it has no impact.

[0031] Furthermore, the indicator light 12 is arranged facing the oncoming vehicle direction of the road 11, and the height of the indicator light 12 is greater than or equal to 3m.

[0032] As can be seen from the above description, by arranging it facing the oncoming vehicle direction, interference with the target lane can be avoided. At the same time, a higher indicator light 12 has a better indication effect, avoiding the greater impact of rain on visibility in the area close to the ground, which may cause misjudgment by the driver.

[0033] Embodiment 1 A highway 1 traffic risk warning system based on the change of rainfall intensity on rainy days, used to warn vehicles traveling on the highway 1. The vehicle has a prompting device; the highway 1 traffic risk warning system includes an expansion module, a reminder module, and a cloud; The highway 1 includes a road 11 and an indicator light 12 on the side of the road 11; multiple placement grooves 13 perpendicular to the length direction of the road 11 are provided on the road surface of the road 11; The expansion module includes multiple water-swellable rubber strips 2. The water-swellable rubber strips 2 are arranged in the placement grooves 13. One end of the water-swellable rubber strip 2 away from the roadside is fixed in the placement groove 13, and the other end is a free end 21; in the dry state, the upper surface of the water-swellable rubber strip 2 is parallel to the road surface. After the water-swellable rubber strip 2 absorbs water, it swells and protrudes out of the ground. The stronger the rainfall, the more water the water-swellable rubber strip 2 absorbs, the more it swells and protrudes, and the greater the vibration when the vehicle passes by; the placement groove 13 is inclined downward towards the free end 21; The number of the reminder modules corresponds to the number of the water-absorbing and swelling rubber strips 2. The reminder module includes a pressure switch 3, a communication module, and a radio receiver 4. The pressure switch 3 is arranged in the placement groove 13 near the free end 21, and there is a gap 5 between the pressure switch 3 and the free end 21. When it rains, after the gap 5 is filled with rainwater and the vehicle passes through the placement groove 13, the water-absorbing and swelling rubber strip 2 is squeezed to move towards the gap 5, pushing the rainwater in the gap 5. The rainwater squeezes or the free end 21 squeezes the pressure switch 3 to control the indicator light 12 to light up and give a warning to the following vehicle. The radio receiver 4 is communicatively connected to the cloud through the communication module. The cloud receives the audio collected from the road 11 by the radio receiver 4 and the wheelbase of the vehicle, judges the sound interval 5 generated by the front and rear wheels respectively squeezing the water-absorbing and swelling rubber strip 2 when the vehicle passes through the road 11, calculates the speed of the vehicle through the wheelbase and the sound interval 5, and if the speed exceeds the preset speed, sends a warning to the reminder device through the cloud.

[0034] The vehicle further includes a locator. The cloud obtains the positioning information of the locator and judges the driving direction of the vehicle according to the positioning information. The cloud locates the line where the vehicle is located according to the positioning information, obtains the weather change of the line where it is located, and sends it to the vehicle. If the weather change includes the change of rainfall intensity, a warning is sent to the vehicle in advance. Here, the positioning information locating the line where the vehicle is located refers to a relatively long distance far exceeding 1 km, such as 10 km, but this road will be passed during navigation.

[0035] The vehicle further includes an input device, and the line is the path between the starting point and the destination obtained after inputting the starting point and the destination through the input device.

[0036] The road 11 includes a fine-grained asphalt concrete layer 14 on the uppermost layer, and the placement groove 13 is opened on the fine-grained asphalt concrete layer 14.

[0037] The depth of the placement groove 13 is 2 - 3 cm, and the width is 2 - 3 cm.

[0038] A sunscreen coating is provided on the upper surface of the water-absorbing and swelling rubber strip 2.

[0039] The indicator light 12 is arranged towards the oncoming vehicle direction of the road 11, and the height of the indicator light 12 is greater than or equal to 3 m.

[0040] Embodiment 2 A highway 1 traffic risk warning system based on the change of rainfall intensity on rainy days, the same parts as those in Embodiment 1 will not be described again, and further includes: An expansion sensor is arranged in the water-absorbing and swelling rubber strip 2. The expansion sensor is electrically connected to the communication module, and the cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity.

[0041] The cloud obtains the inflation data of the inflation sensor to calculate the rainfall intensity, compares and verifies the rainfall data with the meteorological station around the water-absorbing and expanding rubber strip every minute, and then judges the accuracy of the calculation. If the accuracy is insufficient, it will be corrected and a warning will be sent to the prompting device of the vehicle that is about to pass through this road, and / or the indicator light will be controlled to turn on.

[0042] The prompting devices of different vehicles communicate with each other through the cloud; The vehicle is equipped with a vibration sensor. When the vehicle rolls over the water-absorbing and expanding rubber strip 2 that has absorbed water and expanded, the vibration sensor of the vehicle is activated. After activation, it sends vibration information to the cloud through the prompting device. The cloud sends the vibration information to the prompting device of the vehicle that is about to pass through this road 11. Here, the vehicle that is about to pass through this road 11 refers to a short distance of, for example, less than 1 kilometer.

[0043] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A highway traffic risk warning system based on the change of rainfall intensity on rainy days, used to warn vehicles traveling on the highway, wherein the vehicle has a prompting device; characterized in that: The highway traffic risk warning system includes an expansion module, a reminder module and a cloud; The highway includes a road and indicator lights on the side of the road; a plurality of placement grooves perpendicular to the length direction of the road are arranged on the road surface; The expansion module comprises a plurality of water-absorbing and swelling rubber strips, which are arranged in a placement groove, one end of the water-absorbing and swelling rubber strip away from the roadside is fixed in the placement groove, and the other end is a free end; in a dry state, the upper surface of the water-absorbing and swelling rubber strip is parallel to the road surface, and the water-absorbing and swelling rubber strip expands and protrudes out of the ground after absorbing water. The heavier the rainfall, the more water the water-absorbing and swelling rubber strip absorbs, the more it expands and protrudes, and the greater the vibration when a vehicle passes by; the placement groove is arranged to be inclined downward toward the free end; The number of the reminder modules corresponds to the number of the water-swelling rubber strips, and the reminder module includes a pressure switch and a communication module. The pressure switch is arranged in a placement groove near the free end, and there is a gap between the pressure switch and the free end. When it rains, after the gap is filled with rainwater, when a vehicle passes through the placement groove, the water-swelling rubber strip is squeezed to move toward the gap and push the rainwater in the gap. The rainwater squeezes or the free end squeezes the pressure switch to control the indicator light to light up and warn the following vehicle. An expansion sensor is provided in the water-swelling rubber strip, and the expansion sensor is electrically connected to the communication module. The cloud obtains the expansion data of the expansion sensor to calculate the rainfall intensity and compares and verifies the rainfall data with the meteorological station around the water-swelling rubber strip once a minute to determine the accuracy of the calculation. If the accuracy is insufficient, correction is made to issue a warning to the prompt device of the vehicle that is about to pass the road and / or the control indicator light is turned on.

2. The highway traffic risk warning system based on rain intensity changes according to claim 1 is characterized in that: The vehicle also includes a locator; The cloud obtains the positioning information of the locator and determines the driving direction of the vehicle based on the positioning information. The cloud locates the route of the vehicle based on the positioning information, obtains the weather changes on the route, and sends them to the vehicle. If the weather changes include changes in rainfall intensity, an early warning is issued to the vehicle.

3. The highway traffic risk warning system based on rain intensity changes according to claim 2 is characterized in that: The vehicle further includes an input device, and the route is a path between a starting point and a destination obtained by inputting the starting point and the destination through the input device.

4. The highway traffic risk warning system based on rain intensity changes according to claim 1 is characterized in that: The road comprises an uppermost fine-grained asphalt concrete layer, and the placement groove is opened on the fine-grained asphalt concrete layer.

5. The highway traffic risk warning system based on rain intensity changes according to claim 1 is characterized in that: The reminder module also includes a receiver, and the receiver is connected to the cloud through the communication module; The cloud receiving microphone collects audio from the road and the wheelbase of the vehicle, determines the sound interval generated by the front and rear wheels respectively squeezing the water-absorbing and expanding rubber strip when the vehicle passes through the road, calculates the speed of the vehicle based on the wheelbase and the sound interval, and sends an early warning to the prompt device through the cloud if the speed exceeds a preset speed.

6. The highway traffic risk warning system based on rain intensity changes according to claim 1 is characterized in that: The prompting devices of different vehicles communicate with each other via the cloud; The vehicle is provided with a vibration sensor. When the vehicle runs over a water-swelling rubber strip, the vibration sensor of the vehicle is activated. After activation, vibration information is sent to the cloud through a prompt device, and the cloud sends the vibration information to the prompt device of a vehicle that is about to pass the road.

7. The highway traffic risk warning system based on rain intensity changes according to claim 1 is characterized in that: The upper surface of the water-swellable rubber strip is provided with a sunscreen coating.

8. The highway traffic risk warning system based on rain intensity changes according to claim 1 is characterized in that: The indicator light is arranged toward the direction of oncoming vehicles on the road, and the height of the indicator light is greater than or equal to 3m.

Images