# A unified lighting environment Engineering architecture Based on the explanatory note on a unified lighting environment Academy edition A territory is considered through its combined light exposure: streets, transport, housing, workplaces and public spaces. ## What is controlled The scope includes sources, optics, power, controls, schedules and movement. Measurements describe actual outdoor and indoor conditions. Each system retains its responsible operator and operational constraints. ## Coordinated settings Control considers time, weather, presence and activity. Outdoor, transport and indoor lighting are coordinated where the task justifies it. Transitions preserve required visibility, manual control and recovery after failure. ## Light, dimness and darkness Managed darkness is part of the environment. Each setting requires an account of visibility, operating hours and light reaching neighbouring areas. Reduced intensity is supported by a survey and verification of conditions. ## Renewal and reuse Installation history covers inspection, cleaning, repair, adjustment, replacement and reuse of suitable equipment. Relocated devices require a fresh condition and suitability check. Renewal follows a measurable reason. ## Diagnostics and feedback Surveys, measurements and reports help identify conflicting settings. Changes are logged in the environmental passport. Before-and-after checks account for weather, season, traffic and activity. ## Transfer between locations The architecture can serve different territories. Dense cities, suburbs, mountain routes and polar sites have different requirements. Shared elements are data structure, quality verification, local responsibility and explainable control. [S01 · CIE PS 001:2024](https://cie.co.at/publications/cie-position-statement-integrative-lighting-recommending-proper-light-proper-time-3rd) [S03 · CIE S 026:2018 · α-opic Toolbox](https://files.cie.co.at/CIE%20S%20026%20alpha-opic%20Toolbox%20User%20Guide.pdf) Light Academy · 1.5.0 · 2026-09-17