Understanding Obtrusive Light: Application of Guidance Note 01

ILP guidance Note 01/21 (GN01) is seen as the ‘go-to’ advice for the control of unwanted, obtrusive, artificial lighting in the UK and in many other parts of the world.
GN01 is based on the International Standards produced by CIE, being a practical application of these documents.

Session 1 of the course describes obtrusive light and what guidance is available, it also examines legislation around obtrusive light and the issues of enforcement. It goes on to give an understanding and ways to manage light spill.

Session 2 starts with understanding and managing glare and sky glow, then looks at the issues concerning advertisements and media screens and suggests how current advice can be applied. The final part looks at ways of evidencing the design and how to make obtrusive light measurements.