1 Subject Content and Application Scope
This standard specifies the luminous intensity for signal light of railway (hereinafter referred to as luminous intensity), light beam divergence angle of color-light signal, color-light signal with partially divergent lens, light beam partial divergence angle of grade crossing signal as well as the testing methods.This standard is applicable to railway high column, short-lens-type color-light signal, signal indicator, semaphore signal, grade crossing signal, hand signal light, mobile signal light, train sidelight, locomotive marker light as well as color-light signal with partially divergent lens used in curve.
This standard is not applicable to colour searchlight signal, locomotive signal light and signal light using oil lamp as light source.
2 Normative References
1 Subject Content and Application Scope
2 Normative References
3 Terms
4 Luminance Performance of Color-light Signal Shall Meet the Following Specifications
5 The Luminous Intensity in Optical Axis Direction of Signal Indicator and Line Marker Shall Not Be Less Than Those Specified in Table
6 The Luminous Intensity in Optical Axis Direction of Semaphore Signal Shall Not Be Less Than Those Specified in Table
7 The Luminosity Performance of Grade Crossing Signal Shall Meet the Following Requirements
8 The Luminous Intensity in Optical Axis Direction of Hand Signal Light and Mobile Signal Light, Sidelight and Locomotive Marker Light Shall Not Be Less Than Those Specified in Table 6.
9 Testing Methods
10 Testing Report
Appendix
The Spectral Luminous Efficiency V(λ) for Observer of CIF Standard Luminous Intensity
Appendix
Relative Spectral Power Distribution P(λ) of Standard A Light Source
Appendix
Relative Spectral Power Distribution p′(λ) of Railway Signal Light
Additional Explanation:
