BS 3648:1963

This standard BS 3648:1963 Specification for cycle rear lamps is classified in these ICS categories:

• 43.150 Cycles
• 43.040.20 Lighting, signalling and warning devices

Electric lamps for pedal cycles. Colour of light, intensity at various angles, switch performance, resistance to vibration, corrosion, dust, oil, the penetration of moisture. For battery lamps, period for maintenance of luminous intensity from the same battery. Apparatus for making photometric measurements, combinations of filament lamps and batteries known to meet requirements when used with a suitable optical system.