Solar Road Studs are exposed to the outdoors for a long time and need to withstand vehicle crushing, wind erosion, temperature changes, etc. The outer shell material directly determines the core performance and lifespan. The key performance affected by the material mainly includes:
|
Performance Factor |
Description |
|
Compression Resistance |
Whether the road stud can withstand vehicle crushing without being damaged |
|
Impact Resistance |
Ability to resist vehicle impacts and external force collisions |
|
Water Resistance |
Prevents rainwater from seeping into the interior and damaging electronic components |
|
Corrosion Resistance |
Ability to resist salt, chemical substances, and moisture |
|
Lifespan |
The stability of the material determines the long-term durability and value of the road studs |
For example, the compression resistance of high-quality Solar Road Studs is usually above 20 tons, enabling them to remain intact in urban roads with frequent traffic flow.
|
Material Type |
Core Features |
Advantages |
Limitations |
Typical Application Scenarios |
|
PC (Polycarbonate) |
The most widely used transparent shell material for solar road studs |
High transparency, strong impact resistance, good weather resistance, lightweight, moderate cost |
Lower load-bearing capacity compared with metal materials |
Low-traffic areas such as urban roads, bicycle lanes, and parking lots |
|
Aluminum Alloy (6061/6063) |
The primary load-bearing structural material for solar road studs |
High compressive strength (12–20 tons), excellent heat dissipation, corrosion resistance, stable structure |
Higher cost than PC materials |
Highways, bridges, and heavy-load roads with high traffic volume |
|
Glass |
Premium transparent panel material |
Very high transparency, wear-resistant, scratch-resistant, strong weather resistance, resistant to aging |
Lower toughness; may crack under strong impact; relatively high cost |
High-end roads and landscape roads requiring high transparency and aesthetics |
|
Ceramics |
Specialized material for extreme environments |
Extremely strong corrosion resistance, wear-resistant, high-temperature resistant, color-stable |
Heavy weight, brittle, poor transparency, high cost |
Coastal roads, chemical industrial parks, and other highly corrosive environment |
Solar Road Studs are active lighting facilities used for road safety, requiring no external power supply. They charge through solar energy and light up at night, effectively enhancing road visibility at night and reducing traffic accidents.
The core structure mainly consists of five parts: outer shell material, solar panel, LED lighting, battery, and sealing structure.
Currently, the most common material combinations on the market are two types:
The working principle of Solar Road Studs is simple: during the day, the solar panel absorbs sunlight and converts it into electrical energy, which is stored in the battery; at night, it automatically activates the LED lighting to provide clear road guidance for vehicles and pedestrians.
PC stands for Polycarbonate (poly carbonate), a high-performance engineering plastic widely used in Solar Road Studs, especially suitable as the outer shell material. The core characteristics of PC materials include:
PC materials have excellent toughness and can absorb impact forces and return to their original state when subjected to vehicle impacts or external force collisions, rarely cracking or breaking. This feature enables them to remain in good condition for a long time in urban roads with complex traffic flow.
The weight of the PC shell is much lower than that of metal materials. A single PC Solar Road Stud typically weighs between 100-200g. Lightweight brings two advantages: one is reducing transportation costs and facilitating batch transportation; the second is simplifying the installation process, requiring no heavy equipment and can be laid by hand.
PC materials have strong resistance to salt, industrial chemicals, and moisture, and are unlikely to rust, age, or deform. Even in rainy and humid environments, they can maintain stable performance and do not require frequent maintenance.
Compared with metal materials, the compression resistance of PC materials is weaker. The compression resistance of ordinary PC Solar Road Studs is usually around 8-10 tons. This means it cannot withstand the long-term crushing of heavy vehicles (such as trucks, engineering vehicles), and is not suitable for use on heavy-load roads.
The thermal conductivity of PC materials is relatively low. When used in high-temperature areas (where the surface temperature exceeds 60°C in summer), the heat generated by internal electronic components (such as batteries and LEDs) is difficult to dissipate quickly.
Long-term accumulation of high temperatures may shorten the lifespan of electronic components and affect the stability of the light emission of the studs.
Based on its performance characteristics, PC solar road studs are more suitable for roads with medium to low traffic flow and no heavy vehicles. Common applications include:
Aluminum is one of the most commonly used metal structural materials in the field of solar road studs. It is usually made of 6061 or 6063 aluminum alloy, and after anodizing treatment, its performance is more stable. The core characteristics of aluminum materials include:
Aluminum solar road studs have a compressive strength far exceeding that of PC road studs. The compressive strength of ordinary products can reach 12–15 tons, and high-quality products can even reach more than 20 tons.
This enables them to easily withstand the long-term rolling of heavy vehicles, making them more stable.
The thermal conductivity of aluminum is tens of times that of PC materials. Even when used in high-temperature areas, it can quickly dissipate the heat generated by internal electronic components into the air.
Good heat dissipation performance can effectively extend the lifespan of batteries and LEDs, ensuring the long-term stable light emission of the studs.
The stability of the aluminum structure is extremely strong. It can not only withstand high pressure but also withstand the high-speed impact of vehicles on highways, and is less likely to deform or break. Its common application scenarios include:
The procurement cost of aluminum materials is much higher than that of PC materials. The cost of a single aluminum solar road stud is usually 30%-50% higher than that of a PC road stud. For large-scale road projects, choosing aluminum road studs will significantly increase the overall procurement cost.
The weight of the aluminum structure is heavier than that of PC road studs. The weight of a single aluminum road stud is usually between 300-500g, which is 2-3 times that of a PC road stud. The increase in weight will lead to an increase in transportation costs, and more manpower or small equipment will be needed for installation, or assistance with laying will be required.
To help you understand the differences between the two road studs more intuitively, the following is a detailed comparison table of core performance:
|
Comparison Indicators |
PC Solar Road Stud |
Aluminum Solar Road Stud |
|
Compressive Strength |
8–10 tons |
12–15 tons or more (high-quality models can exceed 20 tons) |
|
Impact Resistance |
High – high toughness and not easy to break |
High – metal structure provides strong impact resistance |
|
Weight |
Light (about 100–200 g per stud) |
Medium (about 300–500 g per stud) |
|
Heat Dissipation Performance |
Poor – low thermal conductivity |
Excellent – metal conducts heat quickly |
|
Cost |
Lower – approximately $5–8 per unit |
Higher – approximately $8–12 per unit |
|
Suitable Roads |
Urban roads, bicycle lanes, parking lots |
Expressways, heavy-load roads, bridges |
Traffic flow and vehicle types are the core factors in choosing the material for road studs:
Dominated by small vehicles (cars, SUVs), without heavy vehicles, prioritize PC solar road studs, which offer better cost-effectiveness.
Highways, logistics parks, national roads, etc., areas that need to withstand a large number of vehicle impacts, prioritize Aluminum solar road studs, which have stronger stability.
Budget directly determines the material choice. Different budgets correspond to different solutions:
Such as secondary roads in cities, community road renovations, choose PC solar road studs, which can control costs while meeting basic safety requirements.
Such as highways, bridges, etc., key projects, it is recommended to choose Aluminum solar road studs, although the cost is higher, but the lifespan is longer, maintenance costs are lower, and the long-term cost-effectiveness is higher.
Different outdoor environments have different requirements for the corrosion resistance and heat dissipation of road studs. The specific choices are as follows:
High salt content, prone to corroding metal, but aluminum after anodizing treatment has better corrosion resistance than PC, recommend choosing aluminum road studs.
High-speed vehicles, high collision risk, and need to withstand long-term rolling, prioritize aluminum road studs.
High heat dissipation requirements, aluminum road studs have better heat dissipation performance, can avoid electronic components being damaged by high temperatures.
PC and aluminum road studs are both available, but aluminum road studs have better sealing performance and longer lifespan.
There is no absolute "better" material, only "more suitable" choices. The core advantages and application scenarios of the two solar road studs are different:
The final choice needs to combine three factors: traffic flow, project budget, and installation environment. Based on actual needs, choose the most suitable material to ensure road safety while achieving cost and benefit balance.
The lifespan of PC solar road studs mainly depends on the type of internal battery:
In addition, installation environment and traffic flow also affect the lifespan, regular maintenance can extend its service life.
The pressure resistance of aluminum solar road studs is much higher than that of PC studs, depending on the quality and process of the product:
Yes, and this is a very popular design solution on the market at present.
Many manufacturers adopt the combined design of "PC transparent shell + aluminum alloy base", taking into account the advantages of both materials：
This combined solution not only reduces costs but also improves the comprehensive performance of the road studs, and is suitable for various road scenarios.
