This Technical Report establishes a comparison of regulations on the requirements for light signalling devices to be installed into road vehicles and their trailers. It may be applied in the lack of detailed specifications to choose the photometric requirements or standard for the appropriate lamps regarding their design data and design test values. Sample(s) of light signalling devices taken from production or stock, etc. are to be tested in compliance with the appropriate test documents under "performance requirements" in NA and "conformity of production" in EU.