This document specifies the test principles, test conditions, test steps and calculation of test results for the daytime color of fluorescent reflective films and fluorescent reflective marking materials. Testing for the daytime color of fluorescent reflective films and fluorescent reflective marking materials suitable for traffic management and personnel safety. A number of standard documents are cited, including Color Representation Methods, Standard Illuminators and Geometry Conditions, etc. The Terms and Definitions section defines terms such as Dual Light Spectrometer, Donaldson Matrix, Fluorescent Reflective Film, Fluorescent Reflective Marking Materials to ensure conformity and accuracy of terms in the documents. The Testing Principles section describes the testing equipment and conditions commonly employed.