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The purpose of this document is to provide guidance for the implementation of driver-vehicle interfaces (DVI) for intervention-type lane keeping assistance systems (LKAS), as defined by ISO 11270. LKAS provide support for safe lane keeping operations by drivers via momentary intervention in lane keeping actions, but do not automate part or all of the dynamic driving task on a sustained basis (see SAE J3016). Thus they are not classified as a driving automation system per SAE J3016 - Taxonomy and Definitions for Terms Related to On-Road Motor Vehicle Automated Driving Systems, nor do they prevent possible lane or roadway departures, as drivers can always override an LKAS intervention and road conditions may be such that they cannot support an LKAS intervention (e.g., too slippery, curve to tight, lateral velocity too high, etc.).

Forward Collision Warning (FCW) systems are onboard systems intended to provide alerts to assist drivers in avoiding striking the rear end of another moving or stationary motorized vehicle. This SAE Information Report describes elements for a FCW operator interface, as well as requirements and test methods for systems capable of warning drivers of rear-end collisions. This information report applies to original equipment and aftermarket FCW systems for passenger vehicles including cars, light trucks, and vans. This report does not apply to heavy trucks. Furthermore, this document does not address integration issues associated with adaptive cruise control (ACC), and consequently, aspects of the document could be inappropriate for an ACC system integrated with a FCW system.