When I needed to get a pedal bike for my 3 year old I ended up on an unexpected journey through consumer regulation.
I wanted a bike with hand brakes not back brakes (coaster brakes), but they were nowhere to be found. One shop owner told me they did sell them at one point but got in trouble.
That led me to the Trade Practices Act 1974 specially Consumer Protection Notice No. 6 of 2004
CONSUMER PRODUCT SAFETY STANDARD: PEDAL BICYCLES: SAFETY REQUIREMENTS