J

SAE J*** International for ground vehicle applications. They define technical requirements for design, manufacturing, testing, safety, and performance of passenger cars, trucks, motorcycles, off-highway vehicles, and their components. Serving as a universal industry benchmark, these standards ensure interoperability, consistency, and safety across the global ground transportation sector (e.g., SAE J300 for engine oil viscosity, SAE J1939 for heavy-duty vehicle ECU communication).