Citat:
Saxat direkt från SAEs dokument. Peka gärna på vilket i denna definition som gör att Waymo, men inte Tesla robotaxi, lever upp till definitionen.
ODD= Operational Design Domain
ADS= Automated Driving System
DDT= Dynamic Driving Task
5.5 Level or Category 4 - High Driving Automation
The sustained and ODD-specific performance by an ADS of the entire DDT and DDT fallback.
NOTE 1: The user does not need to supervise a Level 4 ADS feature or be receptive to a request to intervene while the ADS is engaged. A Level 4 ADS is capable of automatically performing DDT fallback, as well as achieving a minimal risk condition if a user does not resume performance of the DDT. This automated DDT fallback and minimal risk condition achievement capability is the primary difference between Level 4 and Level 3 ADS features. This means that an in-vehicle user of an engaged Level 4 ADS feature is a passenger who need not respond to DDT performance-relevant system failures.
NOTE 2: Level 4 ADS features may be designed to operate the vehicle throughout complete trips (see 3.7.3), or they may be designed to operate the vehicle during only part of a given trip (see 3.7.2), For example, in order to complete a given trip, a user of a vehicle equipped with a Level 4 ADS feature designed to operate the vehicle during high-speed freeway conditions will need to perform the DDT when the freeway ends in order to complete his or her intended trip; the ADS, however, will automatically perform the DDT fallback and achieve a minimal risk condition if the user fails to take over when the freeway ends (e.g., because s/he is sleeping). Unlike at Level 3, the Level 4 feature user is not a DDT fallback-ready user while the ADS is engaged (see Example 2 below), and thus is not expected to respond to a request to intervene in order to perform the fallback. Nevertheless, in the case that a Level 4 sub-trip feature reaches its ODD limit, the ADS may issue an alert to the passenger that s/he should resume driving in order to complete their trip. (Note that in this latter case, the alert in question is not a request to intervene, because it does not signal the need for fallback performance.)
