At present, foreign high-pressure water jet cleaning machines are all designed precisely and equipped completely. For example, cleaning devices are set at high-pressure water gun nozzles, which will not affect the road environment. For example, the system pressure can also be adjusted to clean different marking paints. High pressure water jet cleaning method? Technical analysis on the removal of road markings With the development of society, when selecting the removal method of road markings, relevant departments have gone from simply considering the economy to comprehensively considering the impact on road traffic, as well as the safety and environmental protection requirements of construction personnel. According to different actual conditions, select appropriate marking removal technology and formulate reasonable construction scheme. The following table is a comparative analysis of the main advantages and disadvantages of various marking removal technologies.

Road marking plays an irreplaceable role in maintaining road traffic order and ensuring road traffic safety. Along with the change of the traffic control scheme, there must be the clearing of the original road markings. At present, the marking removal technology is improving in the direction of environmental protection, high efficiency and automation. The cleaned road surface is not only free from any residue of marking paint, but also free from any damage. The whole road surface will become very clean.? The ordinary small high-pressure water jet cleaning machine will produce a large amount of waste water during the cleaning operation, which may cause unsanitary pavement or damage the pavement materials by penetrating into the asphalt pores. With the enhancement of environmental protection awareness of countries around the world, the requirements of marking removal on environmental protection are becoming higher and higher. Therefore, the high-pressure water jet marking removal method came into being, becoming a marking cleaning method favored by European and American countries in recent years. Its main construction machinery is the high-pressure water jet marking cleaning machine. The cleaning machine uses the pressurization system to make water shoot out from the nozzle. This water jet has extremely strong impact and cutting force, and can directly penetrate into the asphalt pores to remove the marking paint. The cleaned road surface is not only free from any residue of marking paint, but also free from any damage. The whole road surface will become very clean.? The ordinary small high-pressure water jet cleaning machine will produce a large amount of waste water during the cleaning operation, which may cause unsanitary pavement or damage the pavement materials by penetrating into the asphalt pores. Therefore, corresponding cleaning equipment should be equipped during the cleaning process.