No of Lanes: Number of lanes in pilot area. Most public roads (highways) have at least two lanes, one for traffic in each direction, separated by lane markings.

No of Poles: Total number of lighting poles.

Lane Width(m): Lane measurement (width) in meters.

Median Width(m): The median strip or central reservation is the reserved area that separates opposing lanes of traffic on divided roadways, such as divided highways, dual carriageways, freeways, and motorways. The term also applies to divided roadways other than highways, such as some major streets in urban or suburban areas. If there is no median, use zero.

Pole Setback(m): The horizontal distance between the edge of the kerb (or edge of the traffic lane if no kerb) and the centre-line of the lighting pole, measured normal to the direction of traffic. This only applies to single-side and staggered configurations

Coefficient of utilisation(CU): A measure of the efficiency of a luminaire in transferring luminous energy to the working plane in a particular area. The CU is the ratio of luminous flux from a luminaire incident upon a work plane to that emitted by the lamps within the luminaire (Wikipedia).

Target Illuminance: Minimum require Illuminance level according to regulatory standard.

Target luminance: Minimum require luminance level according to regulatory standard.

Target Uniformity: Minimum require uniformity level according to regulatory standard.

M class road areas: for drivers of motorized vehicles on traffic routes, and in some countries also residential roads, allowing medium to high driving speeds (for EN 13201- 1:2014 suggested associated light levels)

C class road areas: for use in conflict areas on traffic routes where the traffic composition is mainly motorised. Conflict areas occur wherever vehicle streams intersect each other or run into areas frequented by pedestrians, cyclists, or other road users. Areas showing a change in road geometry, such as a reduced number of lanes or a reduced lane or carriageway width, are also regarded as conflict areas

P class road areas: predominantly for pedestrian traffic and cyclists for use on footways and cycleways, and drivers of motorised vehicles at low speed on residential roads, shoulder or parking lanes, and other road areas lying separately or along a carriageway of a traffic route or a residential road, etc.

Adaptive lighting: temporal controlled changes in luminance or illuminance in relation to traffic volume, time, weather or other parameters

Luminaire: an apparatus which distributes, filters or transforms the light transmitted from one or more lamps and which includes, except the lamps themselves, all the parts necessary for fixing and protecting the lamps and, where necessary, circuit auxiliaries together with the means for connecting them to the electric supply (EN 12665:2011)

Lamp: a unit whose performance can be assessed independently and which consists of one or more light sources. Therefore it may include additional components necessary for starting, power supply or stable operation of the unit or for distributing, filtering or transforming the optical radiation, in cases where those components cannot be removed without permanently damaging the unit.

Light source: a surface or object designed to emit mainly visible optical radiation produced by a transformation of energy. The term ‘visible’ refers to a wavelength of 380 - 780 nm.

Light Emitting Diode (LED): a light source, which consists of a solid-state device embodying a p-n junction of inorganic material. The junction emits optical radiation when excited by an electric current.

LED package: an assembly having one or more LED(s). The assembly may include an optical element and thermal, mechanical and electrical interfaces.

LED module: an assembly having no cap and incorporating one or more LED packages on a printed circuit board. The assembly may have electrical, optical, mechanical and thermal components, interfaces and control gear.

LED lamp: a lamp incorporating one or more LED modules. The lamp may be equipped with a cap.

Ballast: a device connected between the supply and one or more discharge lamps which serves mainly to limit the current of the lamp(s) to the required value

Control gear: components required to control the electrical operation of the lamp(s). Control gear may also include means for transforming the supply voltage, correcting the power factor and, either alone or in combination with a starting device, provide the necessary conditions for starting the lamp(s).

Light pollution: Several different definitions have been provide, including: (i) "any adverse effect of artificial light including skyglow, glare, light trespass, light clutter, decreased visibility at night, and energy waste", (Rajkhowa, 2014); (ii) "the sum-total of all adverse effects of artificial light" (CIE 126:1997); (iii) "the introduction by humans, directly or indirectly, of artificial light into the environment" (UNESCO, IAU and IAC);