When choosing solar road studs, many projects are very concerned about one question: Are solar road studs waterproof? Yes, most solar road studs have a waterproof design and use IP protection levels to indicate their waterproofing capability. High-quality solar road studs usually reach IP67 or IP68 levels, which can withstand rain, standing water, and even short-term immersion, thus ensuring long-term stable operation in outdoor road environments. NOKIN, as an outstanding manufacturer of solar road studs, can provide you with solar road stud products with excellent waterproof performance, safeguarding your road safety!
Solar road studs are a type of road safety equipment that uses solar energy for power supply, without the need for an external power source, and are widely used in various outdoor road scenarios.
It is mainly composed of the following five core parts:
The working process of solar road studs is simple and efficient: during the day, the solar panels absorb sunlight and charge the battery; at night, the control circuit automatically triggers the LED module to light up, continuously providing warning lighting for the road.
The installation scenarios of solar road studs determine that they must have excellent waterproof performance. Their common installation locations include:
These locations are constantly exposed to outdoor environments, facing continuous exposure to rain washing, vehicle splashing, and mud water immersion.
If the waterproof performance is insufficient, water will seep into the equipment, directly damaging the circuit, LED lights, or batteries, causing the solar road studs to fail to work properly and even completely scrapped.
IP rating, also known as Ingress Protection Rating (Protection Rating), is a common standard formulated by the International Electrotechnical Commission.
It is specifically used to measure the protection ability of electrical equipment against dust and water, and is the core indicator for judging the waterproof performance of solar road studs.
The IP code is usually composed of two digits, with each digit representing a different protection dimension：
In simple terms, the higher the IP rating, the stronger the overall protection ability of the solar road studs, and the more capable they are of adapting to complex outdoor road environments.
Different IP ratings of solar road studs have significant differences in applicable scenarios and protection capabilities. Here are the three most common ratings in the industry：
| IP Rating | Protection Capability | Applicable Environment |
| IP65 | Complete dust protection; can resist high-pressure water jets from any direction | Ordinary urban roads, dry areas |
| IP67 | Complete dust protection; can be immersed in 1-meter-deep water for a short period (about 30 minutes) without damage | Rainy areas, roads with occasional water accumulation |
| IP68 | Complete dust protection; can be immersed in water at a specified depth for a long time (exact depth specified by the manufacturer) | Frequently waterlogged sections, areas with heavy rainfall, roads near water bodies |
For example, many engineering-grade solar road studs have a waterproof rating of IP68, which means they can remain functional for several hours when submerged in about 1 meter of water and still perform well under harsh outdoor conditions, fully meeting the requirements for use in such environments.
The waterproof performance of high-quality solar road studs is not achieved through a single design but through a combination of multiple protection schemes, providing comprehensive protection from moisture in terms of structure and materials.
Sealing is the core of water resistance. High-quality solar road studs usually adopt multiple sealing designs, preventing moisture from penetrating at its source:
The housing not only needs to withstand vehicle pressure but also must have good waterproof and corrosion resistance properties. Common housing materials include:
The common feature of these materials is that they have smooth surfaces without pores, effectively blocking water penetration while adapting to harsh outdoor environments with high temperatures, ultraviolet radiation, etc.
Many high-end solar road studs adopt an integrated die-casting housing design, integrating the housing, solar panel, and internal components into one unit.
This design significantly reduces the connection gaps of the equipment, reducing the risk of water penetration from the structure, and at the same time enhancing the overall resistance to vehicle pressure and impact, making it more suitable for long-term outdoor use.
Regular manufacturers of solar road studs undergo strict waterproof tests before leaving the factory to ensure they meet the indicated IP rating standards. Common solar road stud waterproof test items include three types:
This is the core test for verifying the waterproof rating. According to the IP rating requirements, the solar anchor nail is immersed in the specified depth of clean water for a specified period of time.
After the test, the equipment is removed to check if it has water ingress inside, and at the same time, the LED lighting, battery charging, and other functions are tested to determine if it meets the IP67 or IP68 rating requirements.
Using professional equipment to simulate a strong rain environment, high-pressure water is sprayed at different angles onto the surface of the solar anchor nail for a certain period of time.
The purpose of this test is to simulate outdoor rainstorm weather, verifying the waterproof performance of the equipment under rainwater erosion, ensuring that water does not seep into the interior through the housing gaps.
For areas with coastal conditions, high salt spray or many mud-water roads, waterproof solar road studs also need to undergo corrosion resistance tests.
Common testing methods include salt spray test (placing the equipment in a salt spray box and spraying salt spray continuously) and humidity test (placing the equipment in a high-humidity environment), and after the test, check if the housing is corroded and if the internal components are functioning properly.
For solar road studs used outdoors, the waterproof rating directly determines the lifespan and operational stability of the equipment. The advantages brought by a high waterproof rating are very obvious:
Avoiding moisture infiltration that leads to oxidation and corrosion of circuits, batteries, and LED lights, reducing the probability of component damage
Reducing short circuits, inability to light up, and other faults caused by water ingress, improving the reliable operation time of the equipment
High-quality IP67/IP68 grade solar road studs can have a normal service life of 5-8 years, which is much longer than products with lower waterproofing grades.
Lower failure rate means no need for frequent equipment replacement or maintenance, significantly saving labor and material costs for road maintenance.
From this, it can be seen that the waterproof design is the “lifeline” for the long-term stable operation of solar road studs in the outdoor environment, and it is also an indispensable core indicator in road safety projects.
For road engineering, municipal construction and other projects, choosing solar road studs with excellent waterproof performance can effectively avoid later maintenance troubles and ensure road safety. Here are 3 core selection points:
The outdoor road environment is complex, and rain and water accumulation are inevitable. It is recommended to prioritize products with IP67 or IP68 grades.
If it is a rainy area, a road with frequent water accumulation or a section near water, directly choose IP68 solar road studs, which can ensure that the equipment can still work normally in extremely humid environments; for ordinary urban roads, choose IP67 grade, balancing performance and cost.
The shell material directly affects waterproofness and durability. It is recommended to prioritize the following two types of solar road studs:
Try to avoid choosing products with ordinary plastic shells, as their waterproof and anti-torsion capabilities are poor, and they are prone to damage over time.
Sealing technology is the key to waterproofing. When choosing, pay close attention to the following points:
These details can directly reflect the solar road studs waterproof ability and are also important criteria for distinguishing between high-quality and low-quality solar road studs.
Yes. Solar road studs with high IP ratings (IP67 or IP68) have excellent waterproofing capabilities and can operate normally in heavy rain conditions without being affected by water erosion.
Their sealed structure and waterproof materials effectively prevent water from entering, ensuring the normal operation of internal electronic components and providing continuous warning lighting for the road.
Partially acceptable. IP68 solar road studs can be submerged in water at a specified depth for a short period of time (usually 1-3 meters, subject to the manufacturer’s parameters) and continue to operate.
However, it should be noted that most solar road studs are not designed for long-term underwater use. After the water recedes, it is recommended to check the equipment status to ensure there is no water ingress.
For most road projects, it is recommended to choose solar road studs of IP67 or IP68 standards.
IP67 is suitable for ordinary urban roads and areas with frequent rainfall; IP68 is suitable for roads that often get waterlogged and experience frequent heavy rains or areas near water bodies, which can ensure the stability and lifespan of the equipment to the greatest extent.
Solar road studs, as outdoor road safety equipment, solar road studs waterproof performance is the core prerequisite for ensuring normal operation. Most high-quality products have excellent waterproof designs and are measured by IP protection levels to assess their waterproof capabilities.
For road safety projects, choosing solar road studs with IP67 or IP68 grades can not only ensure the stable operation of the equipment in rainy, humid, and waterlogged environments, but also extend the service life and reduce maintenance costs, providing a reliable guarantee for road traffic safety.
When choosing products, in addition to paying attention to the IP grade, one should also pay attention to the shell material and sealing technology, comprehensively judging the waterproof performance and durability of the product, and avoiding subsequent maintenance troubles caused by improper selection.
