[etendue]

N.B., this policy is mainly concerned with Highly Automated Vehicles (HAVs), which are defined as SAE Level 3 ("capable of monitoring the driving environment") and above.

edit: as to SAE Level 2, it has this (and more) to say:

> Furthermore, manufacturers and other entities should place significant emphasis on assessing the risk of driver complacency and misuse of Level 2 systems, and develop effective countermeasures to assist drivers in properly using the system as the manufacturer expects. Complacency has been defined as, “... [when an operator] over-relies on and excessively trusts the automation, and subsequently fails to exercise his or her vigilance and/or supervisory duties” (Parasuraman, 1997).

also,

> Manufacturers and other entities should assume that the technical distinction between the levels of automation (e.g., between Level 2 and Level 3) may not be clear to all users or to the general public.