Standard No.:	TB/T 2353-1993
English Name:	Luminous Intensity for Light Signal of Railway
Chinese Name:	铁路灯光信号发光强度
Chinese Classification:	S61    Signal equipment
Professional Classification:	TB    Professional Standard - Railway Transport
Source Content Issued by:	Ministry of Railways
Issued on:	22-Apr-93
Implemented on:	1993-10-1
Status:	superseded
Superseded by:	TB/T 2353-2018 Luminous intensity of railway signals light
Superseded on:	2019-6-1
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	60.0
Delivery:	via email in 1 business day

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: