Electric lighting installations have a purpose To increase traffic safety for road users at night electric light
It is important that the driver has a clearer vision. but the demand for street lighting in each area
It will vary according to the physical characteristics of roads, traffic conditions and road environment in each area.
Installation of electric lighting at intersections, joining paths, curves, and areas where there is a change in
the roadway.will help make it safer In addition, lighting has many safety benefits in urban or urban areas. Because
not only will the motorists be safe traffic side only The light can also help prevent crime for pedestrians.
which in electric lighting work on the road There are many factors to consider. to get luminosity enough
according to standards Including other requirements to ensure safety in the use of road vehicles And efficient
use of resources There are 5 factors as follows.
1. Luminosity (Illuminance)
Means the luminosity that hits an object is related to the amount of light (lumen) / area, the unit is lux (Lux)
and footcandle.(footcandle, fc) Luminosity 1 Lux refers to the amount of force of 1 lumen of light falling on an
object on an area of 1 square meter onthe surface of A sphere has a luminosity of 1 fc, defined as the amount of
light a line of force 1 lumen falls on an object over an area of 1 square foot on the surface of the sphere.
2. Luminance
Refers to the luminosity reflected from an object. Its unit is candela/square meter. If an object has a different
surface or different color Different will cause different values of reflection, that is, the brightness (Luminance) will
also be different, for example, if we shine light on an object.White is brighter than the black itself.
3. Uniformity of Illumination
brightness uniformity Necessary for vision and visual comfort.of the driver where the Uniformity Ratio
(uniformity coefficient)is the value of the proportion between The lowest brightness with the average brightness
4. Limitation of glare
This factor is an important factor. that causes the efficiency of motor vehicle driving to decrease Glare
generally occurs when there is Very bright, which categorizes glare conditions into two types:
4.1 Discomfort glare is the perception of visual discomfort. which in the design must provide
The driver is comfortable in looking at, reducing the difficulty of seeing objects.
4.2 Disability Glare is the perceived inability to see objects.
Disability Glare (Veiling Luminance) occurs when light travels in a non-directional direction until it passes
through, as if passing through glass.This will cause a condition of low vision or can't see clearly. which
is another reason for the state of seeing the object difficult, such as wet road conditions, etc.
Vertical beam angle and angles that cause blinding conditions
Improper selection of lamps and installed incorrectly A bright spot or area will appear like a light curtain
and cause a glare.which can be reduced by choosing a suitable lamp and good design
5. Lamp (luminaire)
Electric bulbs are responsible for illumination, but most often there is illumination around the bulb itself.
There is no definite direction of illumination except Lamps with self-reflectors, ambient light bulbs have low
utilization efficiency. because there is light around the direction instead Will shine in the desired area, so the
production of electric lamps is used with electric lamps. is to force the light to shine in the desired direction,
making The efficiency of the electric lamp is higher for the outdoor lamp should be waterproof. and is safe
to touch
Lekise offers street lighting design services. with lighting calculation service according to the specified
standards by a team of experienced professionals and the ability to consult closely about light trust Lekise
