Standard Test Method for Measurement of Retroreflective Pavement Marking Materials with CEN-Prescribed Geometry Using a Portable Retroreflectometer

Available format(s)

PDF

Language(s)

English

Published date

01-01-2018

Publisher

American Society for Testing and Materials

CONTAINED IN VOL. 06.01, 2018 Describes measurement of the retroreflective properties of horizontal pavement marking materials containing retroreflecting spheres, such as traffic stripes and surface symbols, using a port able retroreflectometer that can be placed on the road delineation to measure the retroreflection at a prescribed geometry.

1.1This 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.

Note 1: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.

1.2The 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.

1.3This 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.

1.4This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee	E 12
DocumentType	Redline
Pages	8
PublisherName	American Society for Testing and Materials
Status	Current

ASTM E 177 : 2014 : REDLINE	Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E 284 : 2017 : REDLINE	Standard Terminology of Appearance