Taxonomy

for

Connected Cooperative and Automated Mobility (CCAM)

DDT fallback-ready user

Added:12/06/2025
Contributor:FAME

Current consensus

DDT fallback-ready user refers to the user of a vehicle equipped with an engaged Level 3 ADS feature who is properly qualified and able to operate the vehicle and is receptive to ADS-issued requests to intervene and to evident DDT performance-relevant system failures in the vehicle compelling him or her to perform the DDT fallback.

  • DDT performance by a Level 3 ADS assumes that a fallback-ready user is available to perform the DDT as required. There is no such assumption at Levels 4 and 5
  • A DDT fallback-ready user who transitions to performing part or all of the DDT becomes a driver (in-vehicle or remote).
Parent: User
Reference: SAE J3016_202104
Contexts:
VehicleOperationUserTechnology

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#.box: fill=#fff stroke=#60BB46 title=bold #lineWidth:1.5 #.basebox: title=italic visual=roundrect fill=#fff #padding:8 #.table: fill=#fff visual=roundrect body=center title=bold [<basebox>Road user] -> [<basebox>User ] [<box>DDT fallback-ready user] -> [<basebox>In-vehicle fallback-ready user ] [<box>DDT fallback-ready user] -> [<basebox>Remote fallback-ready user ] [<box>User] -- [<basebox>4 other narrowers] Road user User DDT fallback-ready user In-vehicle fallback-ready user Remote fallback-ready user 4 other narrowers

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Taxonomy for Connected Cooperative and Automated Mobility (CCAM) v1.0.0 | Funded by the EU HORIZON programme | © All rights reserved 2025