1. Scope

1.1 This test method covers measurement of the retroreflective properties of horizontal pavement marking materials containing retroreflecting beads, such as traffic stripes and surface symbols, using a portable retroreflectometer that can be placed on the road delineation to measure the retroreflection at a prescribed geometry.

The restriction to bead based materials is for the purpose of ensuring a sufficiently gradual optical response function (from points of the source aperture to points of the receiver aperture) to allow generous sized instrument source and receiver apertures.

1.2 The entrance and observation angles of the retroreflectometer affect the readings. As specified by the European Committee for Standardization (CEN), the entrance and observation angles shall be 88.76 and 1.05, respectively.

1.3 This test method is intended to be used for field measurement of pavement markings but may be used to measure the performance of materials on sample panels before placing the marking material in the field.

This standard does not purport to address all of the safety concerns, 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Other Standard

ASTM Standards

D4061 Test Method for Retroreflectance of Horizontal Coatings

D6359 Specification for Minimum Retroreflectance of Newly Applied Pavement Marking Using Portable Hand-Operated Instruments

E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

E284 Terminology of Appearance

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E809 Practice for Measuring Photometric Characteristics of Retroreflectors

Keywords

pavement markings; portable retroreflectometers; retroreflection; CEN (Comite Europeen de Normalization); European Committee for Standardization; Geometric analysis--paints/related coatings/materials; Pavement marking materials; Portable retroreflectometers; Retroreflective marking materials; Symbols; Traffic paint; Traffic stripes;

ICS Code

ICS Number Code 93.080.20 (Road construction materials)

DOI: 10.1520/E1710-05

ASTM International is a member of CrossRef.