ANSI Z535。2-2011（R2017）通过一致的视觉布局，规定了设施和环境中安全标志的设计、应用和使用要求。为了更好地描述设施中使用的五种安全标志，对本标准2011年版进行了修订，以更好地与ANSI Z535协调一致。4，ANSI Z535。5和ANSI Z535。6.

ANSI Z535.2-2011 (R2017) regulates requirements for the design, application, and use of safety signs in facilities and in the environment through consistent visual layout. Reorganized to best describe the five types of safety signs used in facilities, the 2011 edition of this standard is revised to better harmonize with ANSI Z535.4, ANSI Z535.5, and ANSI Z535.6.