Based on the industry data of the Safety Triangle and the on-site feedback from local road contractors, Saudi national highways are constrained by desert geography and climate, and have long faced four major traffic safety problems.
Saudi seasonal sandstorms occur frequently, with a large amount of sand particles suspended in the air. Ordinary reflective road stud cannot reflect light normally, and the lane boundaries become unclear.
Most intercity desert highways in Saudi Arabia have not fully laid municipal street lights, and there is no any road auxiliary lighting in remote sections at night.
Saudi intercity highways have many extremely long and straight sections, with a monotonous driving vision, which is prone to trigger driver visual fatigue and significantly slow down the emergency response speed.
The year-round high-temperature environment in Saudi Arabia will wear out the municipal power lighting facilities, ordinary reflective road stud, and external circuit accessories, significantly increasing the cost of facility replacement.
Compared with traditional reflective road stud and municipal power road lights, intelligent solar road stud specifically addresses the pain points of Saudi roads, and has the following advantages as verified by local project tests:
For different functional sections of Saudi roads, specific construction plans and product grades must be matched, and classification determination must be carried out before construction:
The surface temperature of Saudi desert highways in summer will reach critical high-temperature values.
Saudi meteorological official data shows that the surface temperature of the road surface in summer can exceed 70℃.
Low-end non-standard road stud exposed to long-term high-temperature exposure will have faults such as battery bulging, lamp beads burning, and shell deformation.
For road sections in Saudi Arabia with high sandstorm occurrence rates, such as the central region and eastern provinces, qualified intelligent solar road stud must meet three hardware standards:
Overall IP68 waterproof and dustproof grade
Integrated fully sealed metal casing
Surface water repellent and dust-proof coating process
Load-bearing grade determines the service life of road stud on desert roads, the unified industry procurement standard in Saudi Arabia is as follows:
Note: The heavy trucks passing through the Saudi logistics trunk roads have a large volume, and the 40-ton load-bearing model is the minimum entry standard for project bidding.
The three mainstream battery options for Saudi intelligent solar road studs, along with their cost and performance comparisons (in US dollars), are as follows:
|
Battery Type |
Core Advantages |
Single Unit Purchase Price |
Applicable Scenarios in Saudi Arabia |
|
Nickel-Metal Hydride Battery |
Lower overall production cost |
USD 2.1–2.8 per unit |
Low-traffic roads in city outskirts |
|
Lithium Battery |
Excellent high-temperature resistance and aging resistance |
USD 3.2–4.5 per unit |
Long-distance desert national highways |
|
Super Capacitor |
Extremely long charge-discharge cycle life; maintenance-free |
USD 5.0–6.8 per unit |
Hazardous sections, tunnel entrances, and core ramp areas |
The four intelligent lighting modes compatible with Saudi smart traffic control system:
Constant illumination mode: Constant illumination throughout the night, suitable for straight main roads
Independent flashing mode: Low-frequency individual flashing, suitable for toll station boundary warnings
Synchronous flashing mode: Overall synchronous flashing of the road section, suitable for bend danger warnings
GPS network synchronization mode: Unified control by the cloud, linked to the Saudi Internet of Things traffic control platform
Complete three core on-site survey tasks before construction:
Saudi standard spacing for general roads:
Recommended image: Insert a two-dimensional schematic diagram of road studs arrangement on desert roads, with spacing dimensions and lane center position uniformly marked.
Do not use chalk for manual marking to avoid position shift due to sand.
Strictly follow three standardized marking requirements:
Professional laser instrument positioning of markings
Horizontal and vertical bidirectional calibration alignment
Recheck the lane center baseline
Reserve expansion joints to avoid cracking of the road stud shell due to high-temperature thermal expansion and contraction:
Slot width = Road stud base width + 5 - 10 millimeters
Slot depth is adjusted according to the overall height of the selected road stud.
Construction tip: In Saudi desert construction sites, use vacuum cutting machines to reduce dust on the construction site.
This process directly determines the bonding firmness, and must thoroughly clean all adhering substances in the slot:
Saudi exclusive construction requirements: Use high-pressure dry fans for secondary sand removal, strictly prohibit water washing of the slot, to prevent sand and sludge accumulation in the slot.
Common civilian structural adhesives cannot withstand the 70°C high-temperature road environment in Saudi Arabia.
Recommended two special bonding materials:
High-temperature resistant epoxy structural adhesive
Anti-aging industrial polyurethane structural adhesive
Hardness indicators of the structural adhesive: High-temperature resistance, UV resistance, vehicle vibration resistance.
On-site installation of three core standards:
Complete all-item inspection before final acceptance, including:
Specialized construction standards for desert climate, different from the conventional road construction norms in Europe and America, suitable for Saudi sandy terrain.
| Application Sections | Desert Customized Spacing |
|---|---|
| Straight Desert Main Roads | 8–12 meters |
| Mountain / Desert Curves | 3–5 meters |
| Road Entrances and Exit Ramps | 2–4 meters |
| Tunnel Entrances and Light-to-Dark Transition Areas | 1–3 meters |
Adapted to the high-end intelligent functions of the national-level smart traffic management IoT platform of Saudi Arabia:
Copying the European road layout standards directly would cause double losses:
Too large spacing: Fragmented lane guidance, extremely poor visibility in sand weather.
Too small spacing: Excessive procurement and construction costs, direct waste of project budget.
Using ordinary road surface structural adhesive cannot adapt to the extreme surface temperature of 70°C:
After 2-3 months of use, the adhesive softens and fails due to high temperature.
Ultimately, the road studs come off and are shifted by vehicles.
Not cleaning the accumulated sand regularly is the primary reason for the premature scrapped of solar road studs in Saudi Arabia：
The surface sand blocks the solar panels, significantly reducing the photovoltaic charging efficiency.
Long-term accumulation of sand blocks the LED light outlet, causing the road studs to lose their lane warning function completely.
Adapted to the fixed inspection system of the local road maintenance team in Saudi Arabia：
Monthly inspection: Visual inspection of the overall appearance, checking for shell damage and displacement
Quarterly inspection: Professional electrical performance testing, verifying battery capacity, and status of photo-sensitive components
Clean objects: Floating sand on the panel surface, attached sand dust, and dried mud on the surface.
Cleaning standards: Use soft dry cloth and low-pressure air to clean, prohibit using hard tools to scratch the anti-dust coating.
Combined with the high-temperature all-weather usage environment in Saudi Arabia, a unified replacement standard is adopted：
General battery replacement cycle: 3-5 years
Replacement cycle for super capacitor models can be extended to 6-7 years.
Transformative real engineering case, taken from the road expansion and renovation bidding project in the eastern province of Saudi Arabia.
Project location: National highway exit ramp in Dammam City, Saudi Arabia
Full-area GPS synchronized flashing intelligent solar road studs, using 40-ton pressure-resistant lithium battery model products.
The turning area is uniformly spaced at 3 meters, combined with high-temperature polyurethane special glue for installation and construction.
Saudi Arabian desert highway standard: 8-12 meters for straight sections; 3-5 meters for curved sections; 1-4 meters for ramps and tunnel entrances, with a denser installation pattern different from that in temperate regions.
The custom-made products from Saudi Arabia can withstand temperatures of 70°C on the road surface. The project prioritizes the use of lithium battery and super capacitor models of road studs, and the ordinary nickel-hydrogen battery models are not suitable for the all-day exposure to intense sunlight conditions in the desert.
Yes. Traditional reflective road studs rely on the reflection of vehicle headlights and completely fail in dusty or dark conditions at night. The intelligent version can actively emit light, has a 800-meter visibility range, operates independently of the grid, and can be linked with smart traffic management systems. It has now become a mandatory upgrade for safety facilities in the bidding process for new roads in Saudi Arabia.
Looking at the new construction, expansion and safety improvement projects for highways across the entire territory of Saudi Arabia, intelligent solar road studs are no longer just simple traffic signs.
They are three core assets tailored for Saudi road engineering:
Smart road safety infrastructure adapted to desert conditions
Low-cost national road upgrade solutions
Engineering assets that can operate without grid power for long periods and save costs sustainably
Combined with standardized construction, scientific selection, and specialized desert operation, they can maximize the value of intelligent solar road studs and extend the service life of Saudi highway facilities.
