I think that refers to bicycle (and/or motorcycle?) riding - not being a passenger.
Re:NSW Digital Driver Licence
by TheCalicoCat on Thursday November 07, 2019 @07:18PM
(#21478916)
It's referring to motorbike riders.
https://roadsafety.transport.nsw.gov.au/stayingsafe/mobileph...
> Restricted licences holders including learner, P1 and P2 drivers and riders are not permitted to use their phone at all while driving or riding. This includes use of hands-free and Bluetooth functions.
Am I misunderstanding this? Are they saying that teenagers with a learner's permit are prohibited from using their phones while riding in the passenger seat?