Road lighting - Guidelines on selection of lighting classes Ingestion-build-135476 What is BS 5721 -

What is BS 5721 - Frequency weighting for aircraft noise measurement about

Installation requirements for gas-fired overhead radiant heaters and systems for the environmental heating of premises other than domestic dwellings

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at forcing industry to consider any process which may have adverse impacts on the environment

Road lighting - Guidelines on selection of lighting classes Ingestion-build-135476 What is BS 5721 -1 Scope This Technical Report specifies the lighting classes set out in EN 132012 and gives guidelines on the selection of the most appropriate class for a given situation. To do this, it includes a system to define appropriate lighting classes for different outdoor public areas in terms of parameters relevant to guarantee the aims presented in introductions. The decision on whether a road should be lit is defined in the national road lighting policy.