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Solar road bolts flash solar cell powered LED maintenance-free lighting devices used in road construction to delineate road edges and centerlines. Embedded in the road surface, they are an electronic enhancement to the eyes of the traditional cat that they can give drivers more than a thirty-second reaction window compared to about 3 seconds for conventional reflective devices. The intense brightness of the LEDs makes them highly visible at a distance of about 900 m under favorable conditions.

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Averaging about 100 mm square or 100 mm diameter and about 40 mm thick, units are extremely robust to avoid damage by passing vehicles, and are normally constructed of engineering plastics and polycarbonates. Use of solar road studs reduces the necessity of headlight main beams and the accompanying hazard of dazzling oncoming drivers. They are also more visible in rain and fog conditions where the old type retroreflectors and road markings are problematic. The solar cells charge batteries or capacitors during sunlit hours, over which period the flashing LEDs are turned off by a photoswitch.

The solar powered road stud is an improvement to the conventional one which was invented by Percy Shaw in 1993. The earlier invention was based on the principle of cat’s eye. When a ray of light enters the eyes of a cat, the light shall be reflected back towards to the emitting source. As such, with the reflection of car’s headlights by road studs, it is possible to identify road conditions and alignment in darkness and night times.

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The latest generation of „intelligent“ spikes can also be controlled remotely by traffic control systems. During rush hours, lights can be illuminated to indicate open lanes, or to warn of uncomfortable or traffic jams ahead. Strings hard wired bolts in sequence Finding info flash to die Direction of traffic Shows. Netherlands and in Scotland Testing Shows great promise for the system so far – in the –

 

Road nails improve readability of up to one kilometer ahead -TEN times further than headlights Can reflectors motivation and different mentality, Even in bad weather die. They come in both raised and flush with styles of a variety of colors. This technology is READY in some parts of Europe.

 

Benefits of solar markers

  • Visible up to 1000 meters
  • Reduces accidents by up to 80%.
  • Increased willingness to die Responsiveness
  • Lights actively in wet road conditions where traditional marking paint fails
  • Reduces light pollution
  • Cost-effective alternative to conventional lanterns.
  • Reusable
  • Cyclist-friendly
  • Asphalt flush installation (mm above the road)
  • Snowplough suitable
  • Up to 400 h burn time With 2 LEDs (with full battery)
  • Uni / Bi directional LED
  • Maintenance-free

Easy mounting because wireless

Autonomous Solar Energies

Road transport system in Germany

Germany has approximately 650,000 km of roads, of which 231,000 km are non-local roads. The road network is extensively used with nearly 2 trillion kilometers travelled by car in 2005, in comparison to just 70 billion km travelled by rail and 35 billion km travelled by plane.

High-speed vehicular traffic has a long tradition in Germany given that the first freeway (Autobahn) in the world, the AVUS, and the world’s first automobile were developed and built in Germany. Germany possesses one of the most dense road systems of the world. German motorways have no blanket speed limit for light vehicles, and this has led to various degrees of road accidents and fatalities. Hence, there is a need to put up a system that can help reduce these accidents and fatalities, this is where installing a solar powered road stud comes to play.

s-4-kabel-after-installation
anti_roadway

Why a solar powered road stud?

Currently the SolarLite studs have been installed in over 120 location across the UK, Netherlands, France, Australia and South Africa. Local authorities in places where the road studs have been installed reported a 70 percent reduction in accidents occuring in night time. Automotoportal has some statistics on increased road safety in the countries that employ the studs.

Advantages of solar road studs

Solar road studs have been found to be an economical alternative to expensive street lighting. The use of LED lighting is advantageous as they are long-lasting, energy efficient, cool, emit minimal ultra-violet light and are mercury free (Holdridge, 2012). 

Solar road studs increase the safety for road users by enhancing drivers’ ability to discern/ navigate danger zones much earlier than with the use of traditional road studs. This is enhanced by the fact that solar road studs come in a variety of colours which can be used to discern various dangers along the road.For example, red or amber lights can be used to discern sharp bends or areas where overtaking is not advised, while white lights are used for relatively safe section.

Proof of concept

In conclusion, I will want you to know that the efficaciousness of a solar road stud cannot be over emphasized. It is will be useful on German roads to help curb accidents that happen at nights. It has been tested and it has worked in other countries of the world as indicated earlier. If such is brought to use on German roads, it will help increase the life expectancy of Germany and save lots of lives from untimely death which may occur as a result of road accident.

Road studs enhances visibility of up to a kilometer ahead -ten times further than headlights can reach reflectors, even in bad weather. They come in both raised and flush styles with a variety of colours. This technology is already in use in some parts of Europe.

Britain

A six-mile unlit section of the M25 was fitted with 4500 solar road studs in 2009 to improve driver visibility. This was done as an alternative solution to street lighting in the area. UK research found that when solar road studs were used, drivers were significantly less likely to cross solid centre-lines or move out of lanes on a dual carriageway, and drivers tended to brake earlier and more consistently. In addition to improved driver guidance, its application reduced carbon emissions and operating costs. This case study indicated that solar road studs could provide the same functionality and level of illumination required for accident prevention as street lights, but at substantially lower cost.

Kwa-Zulu Natal

Kwa-Zulu Natal A two-year pilot project was carried out north of Durban along the R66 in 2003, during which 7 800 solar road studs were installed along a 34 km stretch of road. During the year prior to the installation, 103 accidents were recorded, 88 of which were serious and resulted in 27 fatalities, with the remaining 15 being of a less serious nature. These accidents cost the government an estimated R27 million, while the installation of the solar road studs cost R5 million. According to the KZN transport department, night-time road accidents were reduced by 70% within 12 months of the installation of the solar road studs (Holdridge, 2012).

Western Cape

The City of Cape Town has recently piloted solar road studs on Ou Kaapse way. These are currently being used to test the technology for its effectiveness. Different colours have been utilised along the route, with red being placed in areas where extra caution is required, such as areas with limited visibility, entry of side-roads or where overtaking is prohibited. The result of the pilot is yet to be finalised.








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