ASTM-E1501:2004 Edition

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E1501-99(2004) Standard Specification for Nighttime Photometric Performance of Retroreflective Pedestrian Markings for Visibility Enhancement

Published By	Publication Date	Number of Pages
ASTM	2004	8

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Categories: 93.080.30 - Road equipment and installations, ASTM

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Description

ASTM E1501-99-Reapproved2004

Withdrawn Standard: Standard Specification for Nighttime Photometric Performance of Retroreflective Pedestrian Markings for Visibility Enhancement (Withdrawn 2013)

ASTM E1501

Scope

1.1 This specification covers the performance of retroreflective markings to be used on objects worn by pedestrians for the purpose of enhanced conspicuity. It addresses conspicuity from viewpoints around the entire object, and it allows for freedom of design of the markings so long as the minimum requirements are achieved. Objects include but are not limited to jackets, shirts, vests, trousers, socks, backpacks, hats, and footwear. An adjustment for the brightness/luminance ratio as a function of color is also made.

1.2 This specification applies only to nighttime viewing conditions in which the observer is positioned near a source of illumination. The most common example is that of a motor vehicle operator seeing by means of the light from the headlamps of the vehicle.

1.3 This specification describes the minimum retroreflective performance required for a reasonable level of nighttime conspicuity. It does not address potentially diminished performance of retroreflective markings that may be experienced with general storage, use, wear, and care.

1.4 SI (metric) units shall be used in referee decisions under this specification.

1.5 The following safety hazards caveat pertains to specifying materials by this standard specification. Although the markings described in this specification are intended to significantly enhance safety through increased conspicuity under most conditions of illumination and viewing of the type described in 1.2 above, they do not guarantee significantly enhanced conspicuity under all such conditions. Individuals exposed to adverse weather conditions or associated with high levels of vehicular or hazards exposure may require other types or amounts of retroreflective markings. This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

conspicuity; high visibility materials; nighttime retroreflective performance; pedestrians; retroreflection/retroreflectors; retroreflective pedestrian markings; visibility

ICS Code

ICS Number Code 93.080.30 (Road equipment and installations)

DOI: 10.1520/E1501-99R04

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Classification of Objects FIG. 1
3	Performance Requirements FIG. 2 FIG. 3 FIG. 4 FIG. 5
4	Test Methods FIG. 6 FIG. 7 FIG. 8 TABLE 1 TABLE 2 TABLE 3
6	Report Precision and Bias Keywords
7	X1. DISCUSSION OF APERTURES IN MASKS X1.1 X1.2 X2. RECOMMENDATIONS FOR DESIGN AND LAYOUT OF MARKINGS X2.1 X2.2 X2.3 FIG. X1.1 FIG. X1.2 FIG. X1.3
8	X2.4 X2.5 X3. BACKGROUND RESEARCH X3.1 X3.2 FIG. X3.1

Additional information

Standard Title	E1501-99(2004) Standard Specification for Nighttime Photometric Performance of Retroreflective Pedestrian Markings for Visibility Enhancement
Published Code	ASTM
Publication Date	2004
Pages Count	8
ICS Codes	93.080.30 - Road equipment and installations