Traffic safety enhancement system for left-turn sections of highways based on self-explanation

Abstract

This invention relates to a self-interpreting traffic safety enhancement system for left-turn sections of highways. The system is categorized into three levels based on the curve radius: small-radius curves (below 800m), medium-radius curves (800-1500m), and large-radius curves (above 1500m). This invention utilizes combinations of traffic safety facilities of varying densities and heights to rationally control the illusion of curves, enhance drivers' curvature perception, increase the visibility range of reflective facilities, improve the brightness and contrast of key visual information in the curve environment, and clearly define curve boundaries. It helps drivers slow down, increases the sense of urgency, and attracts driver attention, thereby improving traffic safety on highway curves. This system is applicable to three-lane, one-way highway curves with speed limits of 100-120 km / h.

Description

Technical Field

[0001] This invention relates to the field of traffic safety facilities, and more specifically, to a traffic safety enhancement system for left-turn sections of highways based on self-interpretation. Background Technology

[0002] Accident risks are high on curved sections of highways, especially on small-radius horizontal curves. This is because drivers often don't have enough time to slow down when entering a curve, making them prone to hitting the outer guardrail. Additionally, vegetation and anti-glare features on left-turn lanes obstruct the driver's view, making it difficult for them to see the road ahead clearly, leading to turning errors and lane departures. Furthermore, obstructed vision can make it difficult for following vehicles to notice the accident scene in time, increasing the risk of secondary accidents.

[0003] Trucks are more prone to accidents on highway curves. Trucks are difficult to maneuver, making it hard to decelerate and turn quickly, and drivers are easily fatigued, affecting their ability to detect and react to curves. Furthermore, trucks have a high center of gravity, making them susceptible to rollover accidents. At night, headlights are the primary lighting device. However, on curves, limited by the distance and angle of the headlights, drivers can only see guidance facilities within a limited range, making it difficult to observe road conditions further away, increasing driving risks. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a traffic safety improvement system for left-turn sections of highways based on self-explanation. This system uses a combination of traffic safety facilities of different densities and heights to reasonably control the illusion of curves and improve the driver's ability to perceive curvature, thereby improving traffic safety on highway curves.

[0005] The technical solution adopted by the present invention to solve its technical problem is: to construct a traffic safety improvement system for left-turn sections of highways based on self-explanation, including three levels: a small radius curve system with a radius range of less than 800m, a medium radius curve system with a radius range of greater than or equal to 800m and less than or equal to 1500m, and a large radius curve system with a radius range of greater than 1500m.

[0006] The large-radius curve system includes guardrails on both sides of the road, guardrail posts on the inner side of the middle of the guardrails, reflective base posts spaced apart on the surface of the guardrail posts, guardrail reflective rods fitted on top of the guardrail posts, combined delineators and arc-shaped reflective markers on the surface of the guardrails, road markings on both sides and in the middle of the road, and single-layer raised pavement markers on the road markings; wherein, the combined delineators are located on top of the reflective base posts, the arc-shaped reflective markers are located in the middle of adjacent combined delineators, the reflective base posts and guardrail posts, and the reflective base posts and combined delineators are all set at an interval frequency of 1:4~5, and the road marking width is 25~30cm;

[0007] The medium-radius curve system includes guardrails on both sides of the road, guardrail posts on the inner side of the guardrail, reflective base posts spaced apart on the surface of the guardrail posts, guardrail reflective poles mounted on top of the guardrail posts, combined delineators and arc-shaped reflective markers on the surface of the guardrail, road markings on both sides and in the middle of the road, double-layered raised pavement markers on the road markings, and high-pole luminous posts on the outside of the guardrail with a frequency of 1:3 to 4 to the reflective poles; wherein, the combined delineators and arc-shaped reflective markers are both placed on the surface of the guardrail, the arc-shaped reflective markers are placed in the middle of adjacent combined delineators, the reflective base posts and guardrail posts, and the reflective base posts and combined delineators are all spaced at a frequency of 1:4 to 5, and the road marking width is 30 to 35 cm;

[0008] The small-radius curve system includes guardrails on both sides of the road, guardrail posts on the inner side of the guardrails, reflective base posts spaced apart on the surface of the guardrail posts, reflective poles mounted on top of the guardrail posts, combined delineators and arc-shaped reflective markers on the surface of the guardrails, road markings on both sides and in the middle of the road, double-layered raised pavement markers on the road markings, high-pole luminous posts on the outside of the guardrails with a frequency of 1:3 to 4 with the reflective poles, rectangular reflective frames on the outside of the guardrails, variable information boards on the rectangular reflective frames, transverse colored paving on the road surface, and arrow-shaped guide markers on the guardrails on the outside of the curve. The combined delineators and arc-shaped reflective markers are both located on the surface of the guardrails, with the arc-shaped reflective markers positioned in the center of adjacent combined delineators. The reflective base posts and guardrail posts, as well as the reflective base posts and combined delineators, are spaced at intervals of 1:4 to 5. The road marking width is 35 to 40 cm.

[0009] According to the above scheme, the reflective base post is a guardrail post with a yellow or white reflective film on its surface; the combined delineator is set on the inner side of the guardrail, and the width of the combined delineator is 10~20cm; the combined delineator includes a trapezoidal structure in the upper layer, an arc-shaped structure in the middle layer, and a trapezoidal structure in the lower layer, the trapezoidal structure is set in the concave part of the guardrail, and the arc-shaped structure is set in the convex part of the guardrail; the front of the combined delineator is provided with a long afterglow luminescent material and a fluorescent yellow-green reflective film, and the side of the combined delineator facing the driver's view is provided with a white or orange reflective film; the raised pavement marker is hemispherical, the spacing of the raised pavement marker in the large radius curve system is 8~16m, the spacing of the raised pavement marker in the medium radius curve system is 6~12m, and the spacing of the raised pavement marker in the small radius curve system is 4~8m.

[0010] According to the above scheme, the arc-shaped reflective marker is set on the inside of the guardrail. The front of the arc-shaped reflective marker is rectangular and the side is composed of multiple arcs with a length of 5-10cm. The protruding width of the arc-shaped reflective marker is 1-3cm. The surface of the arc-shaped reflective marker is provided with a white or orange reflective film. The width of the arc-shaped reflective marker is 0.1-0.2m. The length of the arc-shaped reflective marker in the large radius curve is 0.5-1m. The length of the arc-shaped reflective marker in the medium radius curve is 1-1.5m. The length of the arc-shaped reflective marker in the small radius curve is 1.5-2m.

[0011] According to the above scheme, the guardrail reflector includes a telescopic pole, an LED light and a solar panel arranged sequentially from bottom to top. The telescopic pole has 2 to 3 layers, the guardrail reflector is 0.5 to 1m long, and the surface of the guardrail reflector is provided with a fluorescent yellow-green reflective film.

[0012] The LED lights emit light sequentially in a clockwise or counterclockwise circular pattern, or flash at a fixed frequency. They emit orange light at night or during normal traffic conditions in rain or fog, and red light if an accident occurs ahead.

[0013] According to the above scheme, the spacing between adjacent high-mast light-emitting columns is 30~60m, the height of the high-mast light-emitting column in the medium radius curve system is 3~3.5m and the setting frequency with the guardrail reflector is 1:3~4; the height of the high-mast light-emitting column in the small radius curve system is 3.5~4.0m and the setting frequency with the guardrail reflector is 1:2~3.

[0014] The surface of the tall luminous column is provided with a fluorescent yellow-green reflective film. The tall luminous column also includes a columnar warning sign, a flashing light and a solar panel arranged sequentially from bottom to top at the top.

[0015] The flashing light is a circle with a diameter of 20-40cm, which flashes at a fixed frequency. Under normal traffic conditions, it emits orange or white light, and if there is an accident ahead, it emits red light.

[0016] The columnar warning sign is 0.5 to 1 m long and 1.5 to 2.5 m high. It is made of cylindrical plastic material with a diameter of 15 to 30 cm and has an orange reflective film on its surface.

[0017] According to the above scheme, the arrow-shaped guide sign is set between the rectangular reflector frame and the tall luminous column, and the arrow-shaped guide sign is set on the outer guardrail between adjacent tall luminous columns;

[0018] The arrow-shaped guide beacon is 2-4m long, 0.8-1.2m wide on the left side, and 0.4-0.6m wide on the right side. The top and bottom sides are designed with convex arcs. The arrow-shaped guide beacon has four gradually decreasing arrows inside. The reflective film of the arrow-shaped guide beacon is green with white or yellow with black patterns.

[0019] According to the above scheme, the variable information board is set at the starting point of the curve, and the variable information board is attached to the support gantry on both sides of the road, the lane indicator is suspended below the support gantry, and the display screen is set above the lane indicator.

[0020] The display screen shows "Curve ahead, slow down" when traffic is normal, and "Traffic accident at the curve ahead" when an accident occurs ahead.

[0021] The lane indicator displays a green arrow when the current lane is passable and a red cross when the current lane is blocked due to an accident.

[0022] The supporting gantry is set at a height of 6-8m and consists of a horizontal bar with a width of 15-30cm at the top and vertical bars with a width of 15-30cm on the left and right sides. The horizontal bar is rectangular and covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top left and wider at the bottom right. The vertical bars are cylindrical. When they are on the outside of the curve, the vertical bars are covered with fluorescent yellow-green reflective film; when they are on the inside of the curve, the vertical bars are covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top and wider at the bottom.

[0023] According to the above scheme, the rectangular reflector is set inside the curve, the spacing between adjacent rectangular reflectors is 120~180m, and the ratio of the rectangular reflectors to the high-pole light-emitting columns is 1:3~4.

[0024] The rectangular reflector includes vertical poles mounted on both sides of the lane, horizontal poles mounted between the vertical poles, and lane indicators suspended below the horizontal poles;

[0025] The crossbar is rectangular and covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top left and wider at the bottom right. The vertical bar is cylindrical. When it is on the outside of the curve, the vertical bar is covered with a fluorescent yellow-green reflective film; when it is on the inside of the curve, the vertical bar is covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top and wider at the bottom.

[0026] According to the above scheme, the horizontal colored pavement is set on the road surface below the rectangular reflector frame and the variable information board, and the width of the horizontal colored pavement is 3~6m and it is red.

[0027] According to the above scheme, the traffic safety improvement system for left-turn sections of highways is applicable to one-way three-lane highways with a speed limit of 100~120km / h.

[0028] The traffic safety enhancement system for left-turn sections of highways based on self-explanation, as described in this invention, has the following beneficial effects:

[0029] 1. In this invention, different densities and heights of traffic safety facilities are applied to curves with different radii. The smaller the curve radius, the greater the density and height of the traffic safety facilities. For small-radius curves, high-positioned high-pole luminous columns, rectangular reflectors, and variable information boards are added, and the height of the guardrail reflectors is increased, enabling drivers to see curve information from a greater distance. When a traffic accident occurs, the guardrail reflectors and high-pole luminous columns emit red light, the variable information boards provide warning information, and the lane indicators dynamically change the right-of-way, which can realize dynamic reminders of accidents.

[0030] 2. In this invention, reflective devices positioned at higher levels, such as guardrail reflectors and high-pole luminous pillars, can improve drivers' ability to judge the direction of the road ahead, reduce the obstruction caused by obstacles such as vehicles ahead and roadside vegetation, and enhance visual guidance for truck drivers. The sleeve-type, telescopic structure of the guardrail reflectors allows adjustment of the display height of the guardrail outline, and the flashing LED lights at the top enhance the display effect of the road outline; the high-pole luminous pillars utilize flashing round lights and retroreflective columnar warning signs to enhance the warning effect on small-radius curves.

[0031] 3. In this invention, some guardrail base posts are covered with reflective film, the middle section is covered with a three-layer structure of combined outline markers and arc-shaped reflective markers, and the top is covered with guardrail reflective poles, so as to achieve continuous vertical display of the guardrail and significantly improve the road outline illumination at night; the combination of multi-density facilities and wide marking design can help drivers slow down, increase the driving tension, and attract drivers' attention.

[0032] 4. In this invention, arrow-shaped guide signs and arc-shaped reflective signs enhance the longitudinal display effect of road alignment, improve visual continuity, and enhance the driver's perception of curve curvature; some facilities are equipped with S-shaped and cylindrical reflective films and hemispherical raised pavement signs, which enhance the visibility range of traffic safety facilities.

[0033] 5. In this invention, the reflective guardrail poles, arrow-shaped guide signs, and tall luminous pillars can improve the brightness and contrast of key visual information in the curved environment. Once the image is blocked by the vehicle in front, it can be detected in time. Therefore, these facilities are conducive to detecting the vehicle in front and can also increase the distance between the driver and the vehicle in front. That is, when the driver is driving, he can see 2 to 3 arrow-shaped guide signs or 2 to 3 tall luminous pillars at the same time, which can meet the minimum safe distance. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0035] Figure 1This is a front view of the method for improving traffic safety on small-radius left-turn sections according to the present invention;

[0036] Figure 2 This is a side view of the method for improving traffic safety on small-radius left-turn sections according to the present invention;

[0037] Figure 3 This is a side view of the method for improving traffic safety on left-turn sections in this invention;

[0038] Figure 4 This is a side view of the method for improving traffic safety on large-radius left-turn sections according to the present invention;

[0039] Figure 5 This is a schematic diagram of the variable information board structure of the present invention;

[0040] Figure 6 This is a schematic diagram of the rectangular reflector frame structure of the present invention;

[0041] Figure 7 This is a schematic diagram of the reflective bar structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the tall light-emitting column structure of the present invention;

[0043] Figure 9 This is a schematic diagram of the combined delineator structure of the present invention;

[0044] Figure 10 This is a schematic diagram of the arc-shaped reflective cursor structure of the present invention;

[0045] In the image: 1. Guardrail, 2. Guardrail post, 3. Reflective base post, 4. Combined delineator, 5. Raised pavement marker, 6. Support gantry, 7. Rectangular reflective frame, 8. Variable message sign, 9. Lane indicator, 10. Arrow-shaped guide sign, 11. Curved reflective marker, 12. Guardrail reflective pole, 13. High-pole illuminated post, 14. Road marking, 15. Horizontal colored paving, 16. Vertical pole, 17. Horizontal pole, 18. Display screen, 121. Circular solar panel, 122. LED light, 131. Rectangular solar panel, 132. Flashing light, 133. Columnar warning sign. Detailed Implementation

[0046] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0047] like Figure 1-10As shown, the self-explanatory highway left-turn section traffic safety improvement system of the present invention divides the curve into three levels according to the curve radius: small radius curve system, medium radius curve system and large radius curve system. The radius range of the small radius curve system is less than 800m, the radius range of the medium radius curve system is greater than or equal to 800m and less than or equal to 1500m, and the radius range of the large radius curve system is greater than 1500m.

[0048] The large radius curve system includes: guardrails 1 installed on both sides of the road; guardrail posts 2 installed on the outer side of the guardrails 1; some guardrail posts 2 have reflective base posts 3 fitted onto their upper ends; and guardrail reflective poles 12 are installed above the reflective base posts 3 to increase the height of the guardrail posts 2. Combined outline markers 4 and arc-shaped reflective markers 11 are installed on the inner side of the guardrails 1. The width of the road markings 14 installed on both sides of the road is increased from 20cm to 25-30cm, and single-layer raised pavement markers 5 are installed on the markings 14 on both sides and in the middle.

[0049] In the medium radius curve system, the following features are added: on the basis of the large radius curve, a high-pole luminous column 13 is installed 0.5 to 1m outside the guardrail; the width of the road markings 14 on both sides of the road is increased to 30 to 35cm; and double-layer raised pavement markers 5 are installed on the road markings 14 on both sides of the road.

[0050] The small radius curve system includes: adding rectangular reflector frames 7 on both sides of the road based on the medium radius curve; suspending variable information boards 8 at the lower end of the rectangular reflector frames 7; setting transverse colored paving 15 on the road surface; increasing the width of the road markings 14 on both sides of the road to 35-40cm; and setting arrow-shaped guide signs 10 on the outer guardrail of the curve. The above constitutes the basic structure of the invention.

[0051] In a preferred embodiment of the present invention, the reflective base post 3 is composed of yellow or white reflective film affixed to the side of the guardrail post 2, and the installation frequency of the reflective base post 3 and the guardrail post 2 is 1:4~5. The combined delineator 4 is positioned above the reflective base post 3 and inside the guardrail 1, with the same spacing as the reflective base post 3. The combined delineator 4 is 10~20cm wide and has a three-layer structure: the upper and lower layers are trapezoidal and located in the recessed part of the guardrail 1, while the middle layer is arc-shaped and located in the protruding part of the guardrail 1. The front of the combined delineator 4 is provided with a long-afterglow luminescent material and a fluorescent yellow-green reflective film, and the side facing the driver's view is affixed with white or orange reflective film. The raised pavement marker 5 is hemispherical and is installed on the road centerline and edge lines. The spacing of the raised pavement marker 5 in the large radius curve system is 8~16m, in the medium radius curve system it is 6~12m, and in the small radius curve system it is 4~8m. The combined delineator 4 can be equipped with a solar panel and has flashing LED lights on the side to enhance its nighttime visibility. The raised pavement marker 5 features a hemispherical design to ensure 360-degree all-around reflectivity, further illuminating the contours of the curve.

[0052] In a preferred embodiment of the present invention, the arc-shaped reflective marker 11 is disposed on the inner side of the guardrail 1. The front of the arc-shaped reflective marker 11 is rectangular, and the side is composed of multiple arc-shaped combinations. The length of a single arc is 5-10 cm, and the width of the protrusion is 1-3 cm. The surface is covered with a white or orange reflective film. The arc-shaped design can increase the reflective range and enhance the visibility effect. The width of the arc-shaped reflective marker 11 is 0.1-0.2 m, the length is 0.5-1 m in a large radius curve system, 1-1.5 m in a medium radius curve system, and 1.5-2 m in a small radius curve system. The longer the reflective length, the better the driver's sense of speed, which can prompt the driver to slow down. The spacing of the arc-shaped reflective markers 11 is the same as that of the reflective base posts 3, and they are disposed in the exact center of adjacent combination delineators 4.

[0053] In a preferred embodiment of the present invention, the interface of the guardrail reflector 12 is slightly larger than that of the guardrail post 2, allowing it to be directly fitted onto the top of the guardrail post 2. It contains 2-3 layers of telescopic structure, with an overall length of 0.5-1m. This structural design facilitates installation on the guardrail post 2 and allows for easy height adjustment. The surface of the guardrail reflector 12 is covered with a fluorescent yellow-green reflective film, and a circular solar panel 121 and a ring of LED lights 122 are installed at the top. The LED lights 122 emit light sequentially in a clockwise or counterclockwise circular pattern, or flash at a fixed frequency. They emit orange light at night and during normal traffic conditions (rain, fog, etc.), and red light if an accident is detected ahead. This structural design highlights the guardrail outline, enhances visual guidance for truck drivers, and improves emergency warning capabilities in case of accidents.

[0054] In a preferred embodiment of the present invention, the spacing between adjacent high-mast luminous columns 13 is 30-60m. Within a medium-radius curve system, the height of the high-mast luminous columns 13 is 3-3.5m, and their setting frequency with the guardrail reflector poles 12 is 1:3-4. Within a small-radius curve system, the height of the high-mast luminous columns 13 is 3.5-4.0m, and their setting frequency with the guardrail reflector poles 12 is 1:2-3. The surface of the high-mast luminous columns 13 is provided with a fluorescent yellow-green reflective film, and the top is equipped with a rectangular solar panel 131, a flashing light 132, and a columnar warning sign 133. The flashing light 132 is a circle with a diameter of 20-40cm, flashing at a fixed frequency. Under normal traffic conditions, it emits orange or white light; if an accident occurs ahead, it emits red light, helping drivers obtain curve information from a greater distance. The columnar warning sign 133 is 0.5-1m long and 1.5-2.5m high. It is made of cylindrical plastic with a diameter of 15-30cm and has an orange reflective film on its surface. It is positioned at the eye level of truck drivers to help them see the driving boundaries on curves and reduce the probability of hitting the guardrail. The high-pole illuminated column 13 needs to be slightly away from the guardrail by 0.5-1m, but the visible area must not be obstructed by roadside vegetation.

[0055] In a preferred embodiment of the present invention, the arrow-shaped guide sign 10 is disposed on the outer guardrail between the rectangular reflector frame 7 and the high-pole luminous column 13, and between adjacent high-pole luminous columns 13. The arrow-shaped guide sign 10 is 2-4m long, 0.8-1.2m wide on the left side, and 0.4-0.6m wide on the right side. It features a convex arc design on both the top and bottom sides, and contains four gradually decreasing arrows. The reflective film is in the form of a green background with white patterns or a yellow background with black patterns. This arrow-shaped guide sign 10, being longer than the linear guide sign, enhances the display effect of the road alignment ahead. The four decreasing arrows indicate the turning direction, and drivers see the larger arrows first from a distance, and only see the smaller arrows up close, thus avoiding excessive information.

[0056] In a preferred embodiment of the present invention, the variable message sign 8 is located at the starting point of the curve and includes a support gantry 6 mounted on both sides of the road, a lane indicator 9 suspended below the support gantry 6, and a display screen 18 located above the lane indicator 9. The display screen 18 displays "Curve ahead, slow down" during normal traffic flow and "Traffic accident ahead at the curve" when an accident occurs. The lane indicator 9 displays a green arrow when the current lane is passable and a red cross when the current lane is impassable due to an accident. The support gantry 6 is 6-8m high and consists of a horizontal bar 17 15-30cm wide at the top and vertical bars 16 15-30cm wide on both sides. The horizontal bar 17 is rectangular and covered with an S-shaped fluorescent yellow-green reflective film, narrower on the upper left and wider on the lower right. The vertical pole 16 is cylindrical. When it is on the outside of the curve, it is covered with a fluorescent yellow-green reflective film; when it is on the inside of the curve, it is covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top and wider at the bottom. This design of the vertical pole 16, in conjunction with the horizontal pole 17, ensures that the reflective area on the outside of the curve is greater than that on the inside, thus indicating the turning direction of the curve and conforming to the visual characteristic that drivers see information on the outside of the curve first when inside the curve. The display screen 18 can include lane information, speed limit information, and advance road warning information, disseminating traffic information for the road ahead.

[0057] In a preferred embodiment of the present invention, rectangular reflectors 7 are positioned inside the curve at intervals of 120-180m, and the ratio of the rectangular reflectors 7 to the high-pole luminous columns 13 is 1:3-4. The rectangular reflectors 7 include lane indicators 9, horizontal bars 17, and vertical bars 16, wherein the reflective film design of the horizontal bars 17 and vertical bars 16 is the same as that of the supporting gantry 6. Using such rectangular reflectors 7 reduces the probability of obstruction by vehicles ahead or landscaping plants, making it easier for drivers to react to the environment ahead on the curve.

[0058] In a preferred embodiment of the present invention, the transverse colored pavement 15 is installed on the road surface below the rectangular reflector 7 and the variable message sign 8, with a width of 3-6m and a red color. It includes road markings such as "Slow Down on Curves" and "Recommended Speed ​​80," forming a comprehensive visual guidance and warning system at high, medium, and low elevations, enhancing information redundancy. The transverse colored pavement 15 attracts driver attention and has anti-slip and wear-resistant properties, increasing the road surface friction coefficient and reducing accident risk. When there is a large proportion of trucks on curves or a high number of accidents, the area of ​​the transverse colored pavement can be expanded, and transverse deceleration markings can be installed on it.

[0059] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A traffic safety enhancement system for left-turn sections of highways based on self-explanation, characterized in that, It includes three levels: small radius curve system with a radius range of less than 800m, medium radius curve system with a radius range of greater than or equal to 800m and less than or equal to 1500m, and large radius curve system with a radius range of greater than 1500m. The large-radius curve system includes guardrails on both sides of the road, guardrail posts on the inner side of the middle of the guardrails, reflective base posts spaced apart on the surface of the guardrail posts, guardrail reflective rods fitted on top of the guardrail posts, combined delineators and arc-shaped reflective markers on the surface of the guardrails, road markings on both sides and in the middle of the road, and single-layer raised pavement markers on the road markings; wherein, the combined delineators are located on top of the reflective base posts, the arc-shaped reflective markers are located in the middle of adjacent combined delineators, the reflective base posts and guardrail posts, and the reflective base posts and combined delineators are all set at an interval frequency of 1:4~5, and the road marking width is 25~30cm; The medium-radius curve system includes guardrails on both sides of the road, guardrail posts on the inner side of the guardrail, reflective base posts spaced apart on the surface of the guardrail posts, guardrail reflective poles mounted on top of the guardrail posts, combined delineators and arc-shaped reflective markers on the surface of the guardrail, road markings on both sides and in the middle of the road, double-layered raised pavement markers on the road markings, and high-pole luminous posts on the outside of the guardrail with a frequency of 1:3 to 4 to the reflective poles; wherein, the combined delineators and arc-shaped reflective markers are both placed on the surface of the guardrail, the arc-shaped reflective markers are placed in the middle of adjacent combined delineators, the reflective base posts and guardrail posts, and the reflective base posts and combined delineators are all spaced at a frequency of 1:4 to 5, and the road marking width is 30 to 35 cm; The small-radius curve system includes guardrails on both sides of the road, guardrail posts on the inner side of the guardrails, reflective base posts spaced apart on the surface of the guardrail posts, reflective poles mounted on top of the guardrail posts, combined delineators and arc-shaped reflective markers on the surface of the guardrails, road markings on both sides and in the middle of the road, double-layered raised pavement markers on the road markings, high-pole luminous posts on the outside of the guardrails with a frequency of 1:3 to 4 with the reflective poles, rectangular reflective frames on the outside of the guardrails, variable information boards on the rectangular reflective frames, transverse colored paving on the road surface, and arrow-shaped guide markers on the guardrails on the outside of the curve. The combined delineators and arc-shaped reflective markers are both located on the surface of the guardrails, with the arc-shaped reflective markers positioned in the center of adjacent combined delineators. The reflective base posts and guardrail posts, as well as the reflective base posts and combined delineators, are spaced at intervals of 1:4 to 5. The road marking width is 35 to 40 cm.

2. The traffic safety enhancement system for left-turn sections of highways based on self-explanation as described in claim 1, characterized in that, The reflective base post is a guardrail post with a yellow or white reflective film on its surface; the combined delineator is set on the inner side of the guardrail, and the width of the combined delineator is 10-20cm; the combined delineator includes a trapezoidal structure in the upper layer, an arc-shaped structure in the middle layer, and a trapezoidal structure in the lower layer, the trapezoidal structure is set in the concave part of the guardrail, and the arc-shaped structure is set in the convex part of the guardrail; the front of the combined delineator is provided with a long afterglow luminescent material and a fluorescent yellow-green reflective film, and the side of the combined delineator facing the driver's view is provided with a white or orange reflective film; the raised pavement marker is hemispherical, the spacing of the raised pavement marker in the large radius curve system is 8-16m, the spacing of the raised pavement marker in the medium radius curve system is 6-12m, and the spacing of the raised pavement marker in the small radius curve system is 4-8m.

3. The traffic safety enhancement system for highway left-turn sections based on self-explanation as described in claim 1, characterized in that, The arc-shaped reflective marker is installed on the inside of the guardrail. The front of the arc-shaped reflective marker is rectangular, and the sides are composed of multiple arcs with a length of 5-10cm. The protruding width of the arc-shaped reflective marker is 1-3cm. The surface of the arc-shaped reflective marker is covered with a white or orange reflective film. The width of the arc-shaped reflective marker is 0.1-0.2m. The length of the arc-shaped reflective marker in the large radius curve is 0.5-1m. The length of the arc-shaped reflective marker in the medium radius curve is 1-1.5m. The length of the arc-shaped reflective marker in the small radius curve is 1.5-2m.

4. The traffic safety enhancement system for highway left-turn sections based on self-explanation as described in claim 1, characterized in that, The guardrail reflector includes a telescopic pole, an LED light, and a solar panel arranged sequentially from bottom to top. The telescopic pole has 2 to 3 layers, the guardrail reflector is 0.5 to 1 m long, and the surface of the guardrail reflector is covered with a fluorescent yellow-green reflective film. The LED lights emit light sequentially in a clockwise or counterclockwise circular pattern, or flash at a fixed frequency. They emit orange light at night or during normal traffic conditions in rain or fog, and red light if an accident occurs ahead.

5. The traffic safety enhancement system for highway left-turn sections based on self-explanation according to claim 1, characterized in that, The spacing between adjacent tall light-emitting columns is 30-60m; the height of the tall light-emitting column within the medium radius curve system is 3-3.5m and its setting frequency with the guardrail reflector is 1:3-4; the height of the tall light-emitting column within the small radius curve system is 3.5-4.0m and its setting frequency with the guardrail reflector is 1:2-3. The surface of the tall luminous column is provided with a fluorescent yellow-green reflective film. The tall luminous column also includes a columnar warning sign, a flashing light and a solar panel arranged sequentially from bottom to top at the top. The flashing light is a circle with a diameter of 20-40cm, which flashes at a fixed frequency. Under normal traffic conditions, it emits orange or white light, and if there is an accident ahead, it emits red light. The columnar warning sign is 0.5 to 1 m long and 1.5 to 2.5 m high. It is made of cylindrical plastic material with a diameter of 15 to 30 cm and has an orange reflective film on its surface.

6. The traffic safety enhancement system for highway left-turn sections based on self-explanation according to claim 1, characterized in that, The arrow-shaped guide sign is placed between the rectangular reflector frame and the tall luminous column; the arrow-shaped guide sign is placed on the outer guardrail between adjacent tall luminous columns. The arrow-shaped guide beacon is 2-4m long, 0.8-1.2m wide on the left side, and 0.4-0.6m wide on the right side. The top and bottom sides are designed with convex arcs. The arrow-shaped guide beacon has four gradually decreasing arrows inside. The reflective film of the arrow-shaped guide beacon is green with white or yellow with black patterns.

7. The traffic safety enhancement system for highway left-turn sections based on self-explanation according to claim 1, characterized in that, The variable message sign is set at the starting point of the curve. The variable message sign includes a support gantry mounted on both sides of the road, a lane indicator suspended below the support gantry, and a display screen set above the lane indicator. The display screen displays "Curve ahead, slow down" when traffic is normal, and displays "Traffic accident ahead" when an accident occurs. The lane indicator displays a green arrow when the current lane is passable and a red cross when the current lane is blocked due to an accident. The supporting gantry is set at a height of 6-8m and consists of a horizontal bar with a width of 15-30cm at the top and vertical bars with a width of 15-30cm on the left and right sides. The horizontal bar is rectangular and covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top left and wider at the bottom right. The vertical bars are cylindrical. When they are on the outside of the curve, the vertical bars are covered with fluorescent yellow-green reflective film; when they are on the inside of the curve, the vertical bars are covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top and wider at the bottom.

8. The traffic safety enhancement system for left-turn sections of highways based on self-explanation as described in claim 1, characterized in that, The rectangular reflector is set inside the curve, and the spacing between adjacent rectangular reflectors is 120~180m. The ratio of the rectangular reflectors to the high-pole light-emitting columns is 1:3~4. The rectangular reflector includes vertical poles mounted on both sides of the lane, horizontal poles mounted between the vertical poles, and lane indicators suspended below the horizontal poles; The crossbar is rectangular and covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top left and wider at the bottom right. The vertical bar is cylindrical. When it is on the outside of the curve, the vertical bar is covered with a fluorescent yellow-green reflective film; when it is on the inside of the curve, the vertical bar is covered with an S-shaped fluorescent yellow-green reflective film that is narrower at the top and wider at the bottom.

9. The traffic safety enhancement system for left-turn sections of highways based on self-explanation as described in claim 1, characterized in that, The horizontal colored pavement is installed on the road surface below the rectangular reflector frame and variable message sign. The width of the horizontal colored pavement is 3 to 6 meters and it is red.

10. The traffic safety enhancement system for highway left-turn sections based on self-explanation according to claim 1, characterized in that, The traffic safety enhancement system for left-turn sections of highways is applicable to one-way three-lane highways with speed limits of 100-120 km / h.

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