Yeah but in QLD: https://www.qld.gov.au/transport/safety/rules/children/exemp...

"Child restraints are not required on buses, trains or personalised transport services such as taxi, limousine and ride-booking services. A bus is a motor vehicle that can carry 13 or more people (including the driver)."

Have not spotted a booster seat, or been offered one in an uber in like 3 years with the kiddo.

"Cannot Safely Carry" be hard to justify when the legal definition permits them to just sit in a normal seat with a normal belt.