Over-lighting
Lighting beyond the required class costs on installation, costs every night in consumption, and degrades the night sky without any safety gain.
What we work on
Public lighting
Lighting what is needed, where it is needed, when it is needed. The rest is expense and pollution.
What this sector covers
Lighting plans for roads, squares, walkways and car parks: photometric calculation, choice of light sources, layout of light points, control and dimming.
Our services
- Road classification and determination of the applicable lighting class
- Photometric calculation: luminance, illuminance, uniformity, glare
- Layout of poles, mounting height, spacing and overhang
- Choice of colour temperature and limitation of intrusive light
- Programming of night-time dimming and detection
- Bill of quantities, specifications and coordination with the network manager
Points of attention
The real pitfalls of the trade — the ones that cost money when nobody watches for them.
Colour temperature
Light that is too cold disturbs wildlife and residents' sleep. The choice must be technically justified.
Uniformity
A correct average can mask dark patches. It is uniformity, not the average, that determines perceived safety.
Connection
It must be coordinated early with the network manager, or risk delaying commissioning of a completed road.
Applicable framework
European standard EN 13201 on public lighting. Distribution network manager requirements.