Glare board, anti-reflection board glare panels on the highway to solve install a central median to headlight glare, traffic safety products for domestic use has also been more than a decade. While the industry in design, production and application of this product has made great achievements, but these products in actual use, there are many issues to be addressed. 

 From Shenzhen 
 In fact, as early as in 1994 the preparation of highway traffic safety facilities design and construction of the technical specifications, the relevant departments glare board settings to make specific and detailed provisions. However, when the glare panels are mostly iron fence, you need to plating, painting, is also very heavy, and too much trouble to install. (North) Jingshi (Jinjiazhuang), Hui (D) salt (Tin), Guangdong Province, Jiangxi Province IX (River) King (German town) and so is this iron fence style used by a number of the early highway glare board. The shortcomings of such anti-reflection board is high cost, easy to rust, not maintenance, transportation is not convenient, and likely to cause secondary damage, therefore, when the industry's urgent need to develop a new material glare board. 
 In the innovative design and production of transport facilities, many companies have done a lot of useful exploration, of which there are two explore far-reaching impact. 
 A blow molding process to the production of the anti-reflection board, the production cross section for the date pit-shaped plate made of HDPE, glare board. Another molded FRP process, which is later referred to SMC materials applied to the top of the glare board. Glass steel material under high temperature and pressure forming, the cross section structure into the shape of the anti-S, the wind strength was significantly enhanced, and later most of fiberglass glare panels using this form. 
 At that time, sporadic hand lay-up production of glass fiber reinforced plastic glare board, individual differences due to the products produced too much, is difficult to guarantee the quality of the soon to be eliminated. Individual steel plates do glare plate, plating, paint, fears of secondary damage after a traffic accident, this anti-reflection board is not to be accepted. 
 Today, fiberglass molding and blow molding glare panels have been gradually replaced by other forms of anti-reflection board, the board material and form of domestic glare. 

 The three elements of the anti-reflection board 
 China is the world's largest glare board, specifications and types of glare board. Speaking from the molding process, fiberglass molding, glass fiber reinforced plastic extrusion, plastic rotational molding, plastic blow molding, plastic injection molding and plastic extrusion; size distribution point of view, the height from 70 to 1.1 cm. width from 140-290 mm, thickness from 3 mm to 70 mm of all kinds have; materials are also a variety of SMC glass steel, the DMC fiberglass, HDPE (high density polyethylene), PVC (polyvinyl chloride), ABS. 
 What raw materials, the molding process or structure, anti-reflection board should have a common. It is this commonality can glare board final decision on whether the highway has been widely used. Blowing constantly hit constantly, does not change color should be the three basic elements of all qualified glare board. 
 Blowing constantly a lot of people may not believe that the wind blow off on the highway glare board, however, proved, this is often the case. Shown in Figure 1, after a typhoon, the glare on the highway board piece into a felled blow off. Careful observation can not be blown off the glare board found these did not break the root of the anti-reflection board is basically some small cracks, which is the glare board when the wind swings caused. The highest concentration of the roots of stress, the wind torque, so the roots is most likely to rupture of the anti-reflection board position. After a lot of local dust storms or typhoons, often glare panels blow off a large area, because its roots strong enough to cause. 
 Hit constantly glare panels in some cases will often be broken down the middle. In New Jersey guardrail antiglare board a large number of fracture, which is a national common problem. Some may think that the road glare plate damage product quality caused by human factors, but after investigation, each glare of the road board breaks are continuous tens of meters long. Because the highway is closed, pedestrians rarely come in, therefore, the car severing the main reason of the road glare plate fracture. New Jersey guardrail at the top of the width of the narrow, two-way traffic lateral spacing is small, extra-wide vehicles often glare board crashed. Especially in the corners, undulating mountains of highway, this situation is even more prone. Highway unit owners a headache, Zhao standard is necessary to purchase anti-reflection board to be replaced in every 2023. 

 Glare board severing the picture 
 Also prone to fading, discoloration glare board masterbatch production glare panels toner is not well controlled, some glare board less than a month faded, and had to be replaced. 

 Causes glare board quality issues 
 Lot of people in the industry reflected glare board still exist many problems in the practical application of the national highway, common standards, such as material properties structure and installation is not reasonable, any deviation will affect the use of anti-reflection board effect. 
 Jerry-built fiberglass glare board, due to unfair competition and price wars and other reasons, and now many manufacturers glare board raw material changed from glass fiber reinforced SMC materials changed to a cheaper BMC materials. BMC resin and glass fiber content than the SMC, the same size and thickness of glass fiber reinforced plastic glare board, the strength of the BMC difference. HDPE blow molding glare board, lower cost way to add calcium carbonate or recycling materials such as packing the inside of the parent material. Of such fillers are added, however, anti-reflection board wind load strength is greatly reduced. Some manufacturers use HDPE blow molding of materials glare board, and sometimes add up to 50% filler in the masterbatch, the glare produced by the board of this process, its performance can be imagined. How to determine whether they contain fillers in HDPE blow molding glare board, there is a simple way: the glare board is leaning in the corner, with their feet trample the middle of the glare board, anti-reflection board bending, and then anti- dizzy board look closely, you hold in your hand without the glare of the filler board deformation part restitution, plus packing glare plate deformation part will not automatically revert to the original, and some may even rupture. 
 The raw materials of the design factors only affect the performance of anti-reflection board, sometimes, the problem is often at the source. The design drawings glare plate cross-section made of flat-panel structure, the glare panels produced wind strength is clearly not enough. After a typhoon, most of them were broken. The experiments show that the same materials and dimensions, anti-glare board of S cross section structure of the wind load is four times the planar structure. In the field of traffic engineering, a lot of designers in their choice of product features and performance generally do not know, not who specializes in, resulting in some quality problems on the highway to bury hidden dangers in the design phase, this should be worth all designers serious reflection. 
 For the detection of anti-reflection board, an indigenous methods of field testing its quality. To 90 cm high, 20 cm wide glare board, for example, two brick support from the middle station of a 60 kg person, if the anti-reflection board is not pressure off, the anti-reflection board is qualified products. 

 Improvement and innovation in the glare board 
 Prone to the problem of glare board described above, the corresponding raw materials, sectional structure, and installation improvement to achieve a multiplier to increase the application effect of the anti-reflection board. 
 Application glare board material of the flexible material is toughness and rigidity of the perfect combination of toughness glare board high-intensity external shocks to the rapid deformation, and will not be broken down the middle; rigid to ensure that under strong wind loads. glare panels will not sway, back and forth from the root fracture. According to my understanding, the industry has to use high strength polymer elastic material produced the perfect combination of flexible and rigid anti-reflection board. Polymer elastic material, in recent years, the staff of U.S. Highway elastic material applied to the production of the anti-reflection board, it is indeed surprising. U.S. Highway glare plate technology has just started, but they are a high starting point, high standard design time will be blowing constantly, hit continue, no secondary damage and so on into consideration, the board of glare produced natural good performance. 
 Changes in the structure for the cross-section of the glare board, highway science and technology personnel in China invented a kind of "people" shaped structure, which greatly enhances the wind load effects of the anti-reflection board. Herringbone structure is the most stable, support the largest area of ??this structure will glare board, the lower one is divided into two, change "foot stand for your feet touch the ground" after the installation of the entire anti-reflection board formed with the fence for a stable triangular support structures. Triangular structure is most stable, and then a big wind are not afraid.