According to research by relevant scholars, drivers can be divided into three steps when recognizing road traffic signs, which are the perception of sign presence, identification of sign color and shape, reading and understanding of sign content. The average duration of the entire process is 6.25 seconds. If the maximum speed limit of the expressway is 120 km / h, the reflection distance of the reflective film must be greater than 208 meters. The maximum reflection distance of the general glass microbead type reflective film is between 130 meters and 250 meters, while the reflection distance of the microprism type reflective film can reach more than 350 meters. Taking into account the impact of bad weather and the slowness of some drivers in recognizing traffic signs, in order to ensure driving safety, a reflective film with a larger reflection distance should be used to make road traffic signs. Therefore, the micro-prism type reflective film has excellent retrograde Reflective performance is more popular.
The construction of highways at all levels in China is steadily increasing, and the demand for micro-prism reflective films for traffic signs is increasing
According to the relevant requirements of the national standard "Road Traffic Signs and Markings" (GB 5768), the installation density and use area of road traffic signs at various levels are different, among which the area of highway traffic signs is about 50 square meters per kilometer. The single kilometer area of highway traffic signs of Class 2 (including Class 2) and above is about 30 square meters, and the single kilometer area of ordinary highway traffic signs is about 12 square meters. According to the data from 2015 to 2018, the average annual construction of expressways in China is about 6,400 kilometers, the construction of second-class and above roads is about 17,900 kilometers, and the construction of ordinary roads is 114,000 kilometers. At the same time, with the exception of newly-built roads, the mileage of rebuilt highways nationwide each year is similar to that of newly-built highways. Considering the loss of text, characters, cutting, etc. of the reflective film material when making road signs, it is expected that 1.5 square meters of reflective film should be used for every 1 square meter of road traffic signs, which can be estimated that the new micro-prism type of highways is newly rebuilt in China The demand for reflective film is about 6.75 million square meters.
Growth point of micro-prism reflective film for infrastructure construction in China
According to the estimates of the Foresight Industry Research Institute, due to the characteristics of the large number of intersections, the complicated traffic conditions, and the large density of signage installations, the use of reflective film on a traffic sign at a crossroad is about 67 square meters. In 2018, China's urban built-up area was 58,400 square kilometers, an increase of 2,230 square kilometers compared with 2017. According to the data of the “Density Test Report of Road Networks in Major Cities of China” released by China Urban Planning and Design Institute in 2018, the average density of road networks in major cities in China is about 6.24 km / km2. The average number of intersections per square kilometer is about 8. Therefore, the annual demand for reflective film for traffic signs in newly built urban areas is about 1.2 million square meters.
Replacement of old signs in the stock market, the average annual replacement volume is considerable
The service life of high-end micro-prism reflective film for road traffic signs is about 5-7 years. According to the calculation of the total mileage of highways and urban areas in China in 2018, if road traffic signs are replaced every 6 years, the annual average amount of road traffic signs reflective film replacement is about 22.24 million square meters.
In summary, combining the three aspects of highway mileage growth at all levels, urban area expansion and replacement of old stocks, the annual domestic demand for micro-prism reflective films for road traffic signs is about 30 million square meters.