6.1.5. In the case of a single lamp containing more than one light source [DEL] when all light sources are illuminated the maximum intensities shall not be exceeded. a2c0
6.1.5. In the case of a single lamp containing more than one light source, the lamp shall comply with the minimum intensity required when any one light source has failed an when all light sources are illuminated the maximum intensities shall not be exceeded. A group of light sources, wired so that the failure of any one of them causes all of them to stop emitting light, shall be considered to be one light source. a0c0