SAE J588_202103

This SAE Standard provides test procedures, requirements, and guidelines for turn signal lamps intended for use on vehicles of less than 2032 mm in overall width. Updated Table of Contents. Section 2: Moved SAE J1319 and SAE J567 to Related Publications, added SAE J2442, SAE J2999, SAE J3069, and a reference to CMVSS. Added Transport Canada contact information. Section 3: Added sequential turn signal definition. Removed multiple lamp arrangement reference and reference to SAE J387. Alphabetized definitions. Section 5: Inserted “lens” to effective projected luminous area term. Renumbered 5.1.7 to 5.2. Section 6: Changed “comply” to “conform” and “with” to “to.” Added 6.4.5. Sequential turn signals have appeared more frequently on vehicles in the U.S. and Canadian market. Requirements were added to this document to appropriately limit sequential turn signal executions such that they would not cause confusion. UN requirements for sequential turn signals were used as a starting point for these requirements, and expanded based on common turn signal configurations in the U.S. and Canada, such as allowing sequential activation and deactivation and to use the centroid of each sequential area to determine the trajectory of the turn signal. Section 7: Added “optically” and removed FMVSS 108 reference. Section 7.1.6: Added additional information for how EPLLA applies to a sequential turn signal.