JT/T 689-2007
Test method for coefndent of retrorehction of utilizing the coplanar geometry (English Version)

Standard No.

JT/T 689-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

Professional Standard - Traffic

Status

Be replaced 2022-12

Replace By

JT/T 690-2022

Latest

JT/T 690-2022

Scope

This standard specifies a method for measuring the retroreflection coefficient of reflective films using the principle of coplanar geometry. This standard is applicable to the laboratory measurement of retroreflection coefficient of highway reflective films. Laboratory measurements of other retroreflective materials can be used as a reference.

JT/T 689-2007 Referenced Document

• JT/T 688 retroreflective terminology*， 2022-09-13 Update

JT/T 689-2007 history

• 2022 JT/T 690-2022 Methods for measuring photometric properties of retroreflectors
• 2007 JT/T 689-2007 Test method for coefndent of retrorehction of utilizing the coplanar geometry

JT/T 689-2007 Test method for coefndent of retrorehction of utilizing the coplanar geometry was changed to JT/T 690-2022 Methods for measuring photometric properties of retroreflectors.