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GB/T 21380-2008 English PDF

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GB/T 21380-2008: Nightting photometric performance and test method of retroreflective pedestrian markings
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Basic data

Standard ID GB/T 21380-2008 (GB/T21380-2008)
Description (Translated English) Nightting photometric performance and test method of retroreflective pedestrian markings
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard R80
Classification of International Standard 93.080.30
Word Count Estimation 9,996
Date of Issue 2008-02-13
Date of Implementation 2008-08-01
Quoted Standard JT/T 688; JT/T 690; JT/T 692
Adopted Standard ASTM E1501-2004, NEQ
Regulation (derived from) National Standard Approval Announcement 2008 No.2 (Total No.115)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the terms and definitions pedestrian reflective logo, night photometric performance and test methods. This standard applies to pedestrians dress and reflective logo apparel and other uses.

GB/T 21380-2008: Nightting photometric performance and test method of retroreflective pedestrian markings


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Nightting photometric performance and test method of retroreflective pedestrian markings ICS 93.080.30 R80 National Standards of People's Republic of China Pedestrian reflective logo photometric performance at night And test methods Posted 2008-02-13 2008-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard corresponds to ASTME1501-2004 "for increasing significance of pedestrian reflective logo night photometric performance standards." This standard is not equivalent degree of consistency ASTME1501-2004. Appendix A of this standard is a normative appendix. This standard by the National Traffic engineering facilities (highway) Standardization Technical Committee (SAC/TC223) and focal points. This standard is drafted by. Ministry of Communications Highway Research Institute, National Transportation Safety Facilities Quality Supervision and Inspection Center. Participated in the drafting of this standard. Rui Fei reflective material (Xiamen) Co., Ltd., Beijing Hua Technology Co., Ltd. in the cross. The main drafters of this standard. Bai Yuanyuan, Su Wenying, Lihong Qin, high-Yi. Pedestrian reflective logo photometric performance at night And test methods

1 Scope

This standard specifies the terms and definitions of pedestrian reflective logo, night photometric performance and test methods. This standard applies to pedestrians dress and reflective logo apparel and other uses.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. JT/T 688 retroreflective term JT/T 690 retroreflector photometric performance test methods By JT/T 692 night-time conditions retroreflective color performance test methods

3 Terms and Definitions

JT/T 688 and JT/T 692 as well as established the following terms and definitions apply to this standard. 3.1 The actual distance between the test simulated geometry. 3.2 Adjustment coefficient of luminous intensity established functions. 3.3 Reflective logo describe physical effectiveness. By measuring the coefficient of luminous intensity of the two specified under observation angles, use of color and then summing Adjustment factor to obtain.

4 night photometric performance

Retroreflective reflective logo should return value is less than the predetermined value in Table 1. Table 1 retroreflective return amount RR Analogue distance/m retroreflective return amount RR/(cd/lx) 70 0.40 230 2.30

5 Test Methods

5.1 Test Principle 5.1.1 Test coefficient of luminous intensity (RI) adopted by the angle reference system shown in Figure 1.

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