The need for traffic lights

Who can imagine road traffic without traffic lights? Today with the modern and increased requirements for road traffic safety, it is not enough for a traffic light to be… just bright. So, when someone is looking for traffic lights that meet really high demands, they should look … well.

Traffic lights must now meet many and varied conditions such as: robustness of construction, ease of maintenance, high clarity of light signal, regardless of their position in relation to the sun, long life and flexibility of application.

 

What to look for in a traffic light

Red? Yellow? Green? … No, it’s not that simple.

For the good quality of traffic lights, the following factors should be considered:

 

 

The luminous intensity and the luminance of the signal

There are several standards that determine the requirements for the traffic light’s luminous intensity. Generally, the light intensity should be high enough so that the signal is clearly visible during the day, but not dazzling at night. The optical system of the traffic light determines the intensity of the light signal and depends on the elements that regulate the light (diffusion lenses, reflector, light source). Because the intensity of sunlight increases as we approach the earth’s equator, the light intensity requirements of traffic lights vary depending on where they are installed. The light sources used by VIEREX are selected in order to achieve the appropriate light intensity in the traffic lights depending on the ambient brightness that exists in the place of their installation.

VIEREX always takes care to provide traffic lights that meet the standard regulations of each country.

VIEREX traffic lights are certified by accredited laboratories for their compliance with these standards. The basic version of VIEREX traffic lights comply with the European Standard EN 12368.

 

The contrast of the luminous field to the surroundings

The surrounding luminance during the day and the light pollution of the cities at night degrade the distinctness of a light signal.

The dark color of the field port (the square front surface) and the visor, increase the contrast of the luminous field to the surround. The addition of the contrast frame, around the traffic light, intensifies the contrast more, in order for the luminous field to be even more distinct.

The reflection of the sun’s rays on the traffic light can cause phantom effect (false recognition of the traffic light signal). VRX traffic lights have a properly shaped housing and anti-phantom optical systems.

 

 

 

The size of the light signal’s surface

The recognition of the light signal is easier, such the larger the diameter of the light fields. On boulevards where the speed of vehicles is high, the diameter of the light fields should be larger, so that the signals can be seen from a greater distance, so that there is sufficient reaction time for drivers.

VRX traffic lights are manufactured in three sizes, corresponding to three different light field diameters (100 mm, 200 mm and 300 mm).

 

 

Dust and water tightness of the traffic light

The suspended dust present in the environment increases or decreases depending on the relative humidity of the air. The amount of dust in the air is small in countries with little sunshine and a lot of rainfall, while on the contrary it is large in countries with a lot of sunshine and little rainfall.

The traffic lights flash repeatedly and the temperature inside changes constantly. The result of this is the creation of air currents, which exert pressure and negative pressure, from the interior of the signal to the environment and vice versa.

If the traffic light is not sufficiently sealed, then the incoming air carries dust and moisture. Dust and moisture accumulate on the surfaces of the parts of the traffic light’s optical system (lenses, light sources, reflectors) resulting in a reduction in the light intensity and brightness of the signals, while the conductivity of moisture can cause electrical damage to the operation of the signal traffic light and in the installation.

Therefore, the impermeability of the signaling devices is an essential element for maintaining their quality over time and for the reliable operation of the installation.

VRX traffic lights are worth noting that they are manufactured with an IP66 degree of protection against dust and water, which is one of the highest among traffic lights on the market.

 

Saving energy

The low energy consumption of the traffic lights makes their operation economical and advantageous, while at the same time keeping the temperature inside the traffic lights low, increasing their lifespan.

VRX traffic lights achieve energy savings, by using excellent quality light sources, to properly controlled light distributions, to maximize the degree of performance of the signal’s optical system.

 

 

Environmental design

The general design philosophy of the VRX traffic lights is based on the rationale of the “Circular Economy”, with purpose the aim of reducing waste, making the traffic light a product consisting of components, which are also available as spare parts.

 

 

Sufficiency of spare parts

The sufficiency of spare parts, for the immediate repair of traffic lights is important because, they are exposed to an environment with risk to be damaged by passing vehicles and in frequent need of repair.

VIEREX guarantees sufficiency of spare parts for 10 years from the date of the traffic light’s purchase, for all offered models of traffic lights, with immediate delivery.

 

Maintenance requirements

The traffic lights maintenance, if demanded frequently, can significantly increase their operational costs.

The VRX traffic lights have minimal maintenance needs due to their long-life light sources, their excellent tightness and their durable construction materials.

Their ergonomic design minimizes the time needed for their maintenance.

 

Warranty

VIEREX guarantees the durability of the materials and the good operation, for all models of its traffic lights, for 60 months from the date of them purchase.

 

 

Installation instructions

VIEREX provides detailed and clear instructions for the correct and quick installation of all signals poles, brackets and suspension systems. Instructions are also available, covering planning the execution of the electrical connections and checking the cabling of a signaling junction.