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How are the reflection effects of the traffic reflective film?

How are the reflection effects of the traffic reflective film? Traffic signs are the main equipment for marking and controlling traffic. Therefore, whether in the day or at night, it can have a great function of reflection. So, with these functions and effects, it meets people’s demand as well as requirements for improving the visibility at night. That is to say, the traffic signs must be changed to meet the standard reflection index, the function of saturation, as well as excellent wide-angle lens properties. How do ordinary people understand the wide-angle properties? When the car headlights shine directly on the signboard from the front, the inclination angle (the angle between the incident light and the normal of the sign surface) is not large. But when turning or at a multi-channel intersection, the inclination angle is relatively large under special conditions. If the inclination angle changes from small to large, and the retroreflective coefficient value is not greatly affected, this type of highway traffic reflective film has a good wide-angle lens performance. So, people have a great choice of the retro-reflective materials to shine under the headlights of vehicles, which account for the diffraction properties of light, forming the highlight of the inner part, while the outer part is dim due to the difference in reflection lines. Therefore, when the logo is at a certain distance from the car, different car models have different observation angles, resulting in individual differences in their visual recognition. According to many scientific studies, the visual distance of signs at different speeds and relative heights is about 150m to 50m. The observation angle of a standard car is 0.2°~0.9°, and the observation angle of a large truck is 0.5°~2.0°. That is to say, the observation angle of a large truck is more than twice that of a car. The driver's line of sight of a large truck is close to the reflective field and has higher requirements for the reflective performance. What are the standards and the rules of traffic reflective sheeting? According to the reasons mentioned above, different grades of the engineering traffic reflective film have various criteria. In particular, it is clearly proposed that Class V (wide-angle) reflective film should be used for signs on small-radius curve sections of expressways, small-radius ramps of overpasses, intersections with complex traffic, and large viewing angles (such as restrictions and signs that require drivers to observe horizontally at a wide angle. And roads are dominated by large vehicles with the purpose of improving their wide-angle retroreflective performance and visibility, especially for signs directly related to safety.In addition, according to the test results of the above principle, when the signs are located on the road surface, such as gantry and cantilever, we sincerely adopt the same grade of super-strong road traffic reflective film material as the roadside, which accounts for their retroreflective effect can dramatically reach about 15% of the roadside. In those cases, the retroreflective performance of the sign plate located on the motorway should be one [...]

How are the reflection effects of the traffic reflective film?

Why can we see traffic signs at night?

Why can we see traffic signs at night? I wonder if you have noticed an interesting phenomenon: you can clearly see traffic signs at night, such as the vests of traffic police, road signs, road markings, anti-collision cylinders, and license plates of vehicles in front of you. These objects obviously do not have the function of self-luminescence, but we can see bright spots in the distance. So, why can we see them? How is such a strong reflection achieved? Reflective materials play an obvious warning role with their bright colors during the day. At night or in low light conditions, their eye-catching reflective effect can effectively enhance people's recognition ability. And they are mainly used for personal safety protection and traffic safety protection. The application fields of reflective materials can be divided into two categories: the planned special market and the civilian market. The planned special market generally refers to the field where reflective materials must be used according to national laws and regulations, mainly known as traffic safety fields, such as traffic signs, license plates, and car body reflective signs. infrastructure warning signs in industries such as communications and electricity; high-visibility warning clothing for firefighting, road administration, police, and safety rescue; the civilian market generally refers to various types of clothing, shoes, hats, bags, billboards, and other fields. Retroreflection coefficient performance index: There are many index factors to measure the performance of retroreflective materials, the most important of which is the retroreflective ability of the material, which determines the quality grade of the reflective material and is directly related to traffic safety and personal safety. Retroreflection coefficient definition: It is used to describe the amount of light that is reflected back to the light source after it hits the surface of an object, that is to say, the ratio of the reflected light to the irradiated light, and the unit is: candela/per lux square meter (cd/(lx·m²)) What are the technical index requirements? GB/T 18833-2012 "Reflective Film for Road Traffic Signs" divides various retroreflective materials into 7 types as the design basis for various highway traffic signs. Each type of reflective film has a corresponding retroreflective coefficient, and the retroreflective coefficient also distinguishes colors. Different colors have various requirements, and their retroreflective coefficients are also different. However, the larger the retroreflective coefficient, the better the retroreflective performance of the reflective film or reflective cloth. But it cannot be too high, otherwise it may cause light seepage and visual glare of the font. In a sense, the application of retroreflective materials is a more proactive safety precaution, which is more valuable than measures such as guardrail protection aimed at reducing the degree of injury after an accident. Reflective materials provide reliable protection at a low cost in transportation. We look forward to its further development to provide more beautiful and diversified solutions for road safety.

Why can we see traffic signs at night?

Why do highway corrugated guardrails use reflective film?

Why do highway corrugated guardrails use reflective film? An introduction to the reflective film’s principle of the highway corrugated guardrail: The reflective sheeting, used for highway guardrail, is a material that can be directly applied in other fields, which can also reflect the light of cars. In those cases, the driver can see the barriers in the road and then take immediate action. Since various reflective sheetings have different components and designs, they have various influences. For instance,both the embedded lens type and the sealed lens type use glass beads as the reflection technology principle, while the reflection principle of the prismatic reflective film is the refraction and reflection of the micro-prism. Information concerning the classification of the reflective film for the highway corrugated guardrail: The backing of the reflective film is divided into pressure-sensitive type and heat-sensitive type, and the bottom plate is an aluminum plate. Both temperatures for working must be over 18 degrees centigrades. What’s more, they serve a life normally is 3 to 7 years, and their positive impact brightness (0.2o/-4o) is generally around 100cd/lx/m. After 7 years, the brightness drops to 50% of the initial brightness value. The reflective film influences coefficient of lens-sealed reflective film is at least twice that of lens-embedded reflective film. The vacuum support structure inside it also solves the problem of condensation on traffic safety signs caused by changes, like temperature and environment, which improves the material’s ability to reflect to some extent. The reflective film of large-angle microprisms will not have much attenuation at large incident angles and observation angles. Therefore, our economical highway guardrail reflective film is mostly used in places with multiple lanes and curves where traffic safety signs are required. The application of reflective film in traffic signs: Different types of highways will utilize different levels of reflective sheeting to make signs, which are usually designed for roads with faster speeds (such as expressways, first-class highways, etc.) to provide reflective films with a high reflectivity coefficient and reflection brightness. Nowadays, some cities ' roads in many economically developed areas also require taking advantage of super reflective sheeting to make traffic signs,which, on the one hand, can enhance safety, and on the other hand, can make these roads become beautiful. Generally speaking,slow-speed roads (such as provincial roads and national roads) are designed to use high-grade reflective film; some temporary signs usually use low-grade reflective film. Why do people stick the reflective stickers on highway guardrails? We always see the colorful reflective sticker in the traffic facilities, particularly on the road corrugated guardrail, which is very common. The original purpose of it is to enhance the visibility and reduce the accidents on the roads because the drivers can’t see the objects clearly; in other words, more accidents are occurring. With the purpose of solving these problems, people will stick the reflective stickers on the highway guardrail according to the designed distance. Some studies show that this act can enhance the effect of reflection, and the drivers will [...]

Why do highway corrugated guardrails use reflective film?

How new prismatic retroreflective sheeting solves double-vision in traffic signs

How new prismatic retroreflective sheeting solves double-vision in traffic signs When it comes out, it breaks through the barrier that prismatic reflective sheeting can’t combine the long-distance reflective capability with the close-range reflective capability. In another aspect, it can determine the angles (incident angle and observation angle) required to make the sign visible at the ideal distance, considering the spread of cars' lights. And then people will find the non-reflective area on traditional truncated prisms, which will be cut next. So that we can achieve the purpose of the reflective structure, the reflective film area per unit area is 100%, which is referred to as "full reflection". What are the reflection effects of it? On today's full-prismatic reflective film, after each crystalline cube is connected and arranged in a specific pattern, there will be more than 930 units per square centimeter of material area to control the path of light entry and reflection. However, from any aspect, the lower layer of the crystalline cubic corner body is sealed to form an air layer, which utilizes the diffraction phenomenon of light to cause the incident light to form internal total reflection, thereby achieving the best reflective effect without the aid of a metal reflective layer. Compared to traditional engineering-grade and high-intensity-grade reflective films, this reflective film, made from wear-resistant and high-hardness polycarbonate material and utilizing crystalline cube technology, not only doubles its reflective performance but also significantly improves its large-angle reflective performance. The front brightness of this full-prism reflective film is more than six times that of the engineering-grade film. The front brightness of the white film (0.2º/-4º) is generally above 600 cd/lx/m, which is more than twice that of the high-intensity grade, and the retroreflective performance at large observation angles (0.5º and 2º) is about two to four times higher. Why is it different from other prismatic reflective sheeting? When it comes out, it breaks through the barrier that prismatic reflective sheeting can’t combine the long-distance reflective capability with the close-range reflective capability. In another aspect, it can determine the angles (incident angle and observation angle) required to make the sign visible at the ideal distance, considering the spread of cars' lights. And then people will find the non-reflective area on traditional truncated prisms, which will be cut next. So that we can achieve the purpose of the reflective structure, the reflective film area per unit area is 100%, which is referred to as "full reflection". What are the reflection effects of it? On today's full-prismatic reflective film, after each crystalline cube is connected and arranged in a specific pattern, there will be more than 930 units per square centimeter of material area to control the path of light entry and reflection. However, from any aspect, the lower layer of the crystalline cubic corner body is sealed to form an air layer, which utilizes the diffraction phenomenon of light to cause the incident light to form internal total reflection, thereby achieving the best reflective effect without the aid of [...]

How new prismatic retroreflective sheeting solves double-vision in traffic signs
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