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Motorcycle Auxiliary Front Lamps: SAE J1306-2018 Engineering Guide

SAE J1306-2018 establishes parameters, test methods, and performance requirements for auxiliary front lamps used on motorcycles. This recommended practice has been revised to be technology neutral—replacing references to “bulbs” with “light source”—and adds an optional improved wider beam pattern (Table 2)…

Motor Vehicle Heater Test Procedure (SAE J638-2011)

SAE J638-2011 is a stabilized recommended practice that provides a consistent and repeatable test procedure for evaluating motor vehicle heater performance. First issued in 1960 and stabilized in 2011, this standard reflects mature technology that is unlikely to change in…

Model-Based STPA: Enhancing Safety Analysis with MBSE

System Theoretic Process Analysis (STPA) is a powerful hazard analysis technique for safety-critical systems. The new SAE J3187-3-2023 standard provides recommended practices for applying STPA in a model-based systems engineering (MBSE) environment. This article explores the key concepts, steps, and…