BS AU 145e:2018

This British Standard specifies requirements for retroreflecting number plates for vehicles, including requirements for: colorimetric and photometric properties; adequate contrast between background and characters in NIR wavelengths to demonstrate compatibility with automatic number plate recognition (ANPR) systems; and resistance to bending, impact, abrasion, corrosion, solvents, weathering and extremes of temperature. The British Standard does not specify requirements for number plates fitting, which is prescribed by statutory regulations. NOTE1 The appropriate regulations of The Road Vehicles (Display of Registration Marks) Regulations 2001 (as amended) [1] specify requirements for fixing, size and type of letters, numbers and spacings of retroreflecting number plates. NOTE2 Retroreflecting number plates can be manufactured from any material which performs satisfactorily in service, providing the requirements of this British Standard are met.