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ASIL ASIL is a hazard-classification framework developed to allocate safety goals and development rigor for automotive systems. It assigns graded safety integrity requirements to functions and components used in vehicles, informing design, verification, and validation activities across organizations such as International Organization for Standardization, Society of Automotive Engineers, European Commission, German Federal Motor Transport Authority, and industry consortia like AUTOSAR and ISO/IEC JTC 1. The concept underpins many safety programs at manufacturers including Toyota Motor Corporation, Volkswagen Group, Ford Motor Company, General Motors, and suppliers such as Bosch and Continental AG.
ASIL emerged from standardization efforts to manage risks associated with increasingly complex vehicular electronics and software. Development of ASIL aligned with initiatives at International Organization for Standardization working groups and associations including SAE International, UNECE, NHTSA, and academic centers like Massachusetts Institute of Technology and Technische Universität München. It is widely referenced by vehicle manufacturers and tier-one suppliers such as Denso Corporation, Magneti Marelli, ZF Friedrichshafen, and Aptiv PLC when integrating systems like advanced driver assistance from firms such as Mobileye.
ASIL classifies hazard severity into graded levels tied to probability and controllability metrics used in risk assessment methods promoted by bodies like ISO and IEC. The framework correlates hazard severity with required development rigor for products deployed by corporations such as Honda Motor Company, Nissan Motor Corporation, Hyundai Motor Company, Kia Corporation, and fleets operated by entities such as Uber Technologies and Lyft, Inc.. It applies to subsystems including powertrain modules from Cummins, braking systems from Brembo, sensors from Valeo, and electronic control units sourced from Harman International.
Determination proceeds from identified hazardous events during concept and system design phases, using techniques advocated by institutions such as SAE International, IEEE, and ISO committees. Teams at firms like BMW, Mercedes-Benz Group, Renault, Peugeot, Stellantis, and Volvo Cars perform hazard analysis and risk assessment (HARA) with inputs from suppliers including Infineon Technologies and NXP Semiconductors. The process evaluates parameters similar to failure modes considered by NASA and by aerospace contractors such as Boeing and Airbus when mapping severity, exposure, and controllability into a target level. Cross-functional reviews often involve legal counsel and regulators including European Commission delegations and national agencies like DVSA.
Each ASIL level imposes engineering goals and validation criteria used by development teams at Siemens, Honeywell, ABB, and automotive OEMs. Lower levels may accept simpler mitigation patterns favored by suppliers like Magneti Marelli while ASIL levels requiring greater rigor drive systematic measures adopted by companies such as Bosch and Continental AG. High ASIL assignments trigger architectural constraints, fault-tolerance expectations, and verification workloads similar to standards applied by Rolls-Royce Holdings in other safety-critical domains. These goals influence product development lifecycles at Panasonic and software practices at firms like Microsoft and Google for automotive platforms.
Compliant methods include fault-tree analysis used by General Electric and model-based design practices championed by MathWorks, alongside static analysis tools from vendors such as Synopsys, Coverity, and GrammaTech. Formal methods advocated by academic groups at Carnegie Mellon University and ETH Zurich and toolchains from suppliers like Wind River and Green Hills Software are applied to satisfy high integrity requirements. Redundancy architectures resembling patterns used by Airbus and Lockheed Martin and diagnostic strategies akin to aerospace avionics are implemented by tier-one teams at ZF Friedrichshafen and Aptiv PLC.
ASIL concepts are embedded in standards maintained by International Organization for Standardization committees and are referenced in regulatory instruments from UNECE and national regulators such as NHTSA and DVSA. They interact with compliance regimes including type approval processes overseen by bodies like Federal Motor Vehicle Safety Standards authorities and harmonization efforts led by UNECE WP.29. Industry guidance from consortia including AUTOSAR and JASPAR complements normative texts produced with contributions from labs like TÜV SÜD and DEKRA.
Challenges arise in translating ASIL assignments into consistent architectures across multinational supply chains managed by conglomerates such as Magna International and Faurecia. Critics within academia—researchers at Stanford University, University of California, Berkeley, and Imperial College London—and industry practitioners argue about inconsistency, variability in hazard analyses, and the burden on startups and software-centric firms like Tesla, Inc. and Waymo. Debates involve trade-offs similar to those seen in sectors governed by FDA and European Medicines Agency, with concerns over verification cost, tool qualification, and integration with cybersecurity frameworks advanced by ENISA and ISO/IEC JTC 1 task forces.
Category:Automotive safety