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Who must wear one— and who is responsible
Every person in a moving car must be restrained. There are no ’short trip’ or ’just the back seat’ exceptions. If you are the driver, the law splits responsibility by age. You must wear your own belt whenever the car is moving (or stationary but not parked), and you are personally responsible for making sure every passenger under 16 is correctly restrained. Passengers aged 16 and over are responsible for their own belt, though in several states the driver can also be penalised for carrying an unrestrained adult.
This matters because each unrestrained person is counted as a separate offence. A driver carrying three children who aren’t properly restrained can be booked three times over. You also cannot carry more passengers than there are seatbelts or restraint positions— ’squeezing one more in’ without a belt is illegal. Sharing a single belt between two people is both against the law and extremely dangerous: in a crash the belt cannot hold either body, and one occupant can be crushed by the other.
Child restraint rules, stage by stage
The child restraint rules are age-based, and they set the minimum— not the ideal. Under the Australian Road Rules:
- Under 6 months: an approved rearward-facing restraint (a baby capsule or convertible seat used rear-facing). - 6 months to under 4 years: an approved rearward-facing OR forward-facing restraint that has an inbuilt harness. - 4 years to under 7 years: an approved forward-facing restraint with an inbuilt harness, or an approved booster seat used with a correctly positioned lap-sash (lap-and-shoulder) belt. - 7 years and over: an adult seatbelt may be used if it fits correctly— but a child who is still too small should stay in a booster.
Every restraint must meet Australian/New Zealand Standard AS/NZS 1754 and display that marking. Restraints sold overseas— including many bought online— often do not meet the standard and are not legal to use here. Safety authorities such as Kidsafe are clear: keep your child in each stage until they have genuinely outgrown it, rather than ’graduating’ them the day they reach the minimum age.
When can a child sit in the front?
Where a child can sit is regulated too. In a vehicle with two or more rows of seats:
- A child under 4 years must never travel in the front seat. - A child aged 4 to under 7 years must not travel in the front seat unless all the other (back) seats are already occupied by children also under 7 in approved restraints— the classic ’the back is full of little kids’ situation.
The reason is airbags and crash forces. A front airbag deploys with enough force to seriously injure a small child, and a rearward-facing restraint must never be placed in front of an active airbag. In a single-row vehicle such as a ute or a two-seat van, a child may travel in the front, but still in the correct restraint for their age, and the restraint must be compatible with any airbag— check the vehicle handbook, and deactivate the passenger airbag only if the manufacturer allows it.
Fitting it right— the detail that fails people
Most restraint fines, and most restraint injuries, come down to fit rather than the wrong seat. The harness or belt must be firm— you should not be able to pinch a loose fold of webbing at the shoulder— and it must never be twisted. Bulky jackets and puffer coats create hidden slack; put the child in the harness first, then a blanket over the top. A booster seat must always be used with a lap-sash belt, never a lap-only belt, and the sash must cross the middle of the shoulder, not the neck or the arm.
For older children, safety experts use the ’5-step test’ to decide whether a child is ready for an adult belt alone. Can the child sit right back against the seat? Do their knees bend comfortably at the seat edge? Does the sash sit across the middle of the shoulder? Does the lap belt sit low across the hips, not the stomach? Can they stay seated like this the whole trip? If the answer to any is no, keep them in a booster— many children need one until around 145 cm tall, well past age 7. If you are unsure, an authorised restraint fitting station will check it for free or a small fee.
Exemptions, taxis, rideshare and penalties
A few narrow exemptions exist under the Australian road rule. A person who holds a current medical certificate stating they cannot wear a seatbelt is exempt but must carry that certificate. A driver is not required to wear a belt while actually reversing. Certain workers, such as some police and delivery drivers making frequent stops, have limited exemptions in some states. None of these excuse an unrestrained child.
Taxis carry special, state-specific rules— for example, a child may sometimes travel restrained by an adult belt in the back seat where an approved restraint isn’t available— but rideshare services like Uber are generally treated as private vehicles, so the correct child restraint is still required (bring your own, as the driver may not carry one). Because these details genuinely differ, confirm the current position with your state road authority.
Penalties are among the heavier traffic sanctions: each unrestrained occupant is a separate offence carrying demerit points and a fine, and several states apply double demerits over holiday long weekends. Rather than quote a figure that changes, check the current penalty with your state or territory road authority.
Common mistakes learners make
- Moving a child up to the next stage too early. The ages are a legal minimum, not a signal to graduate— a child who still fits their current seat is safer staying in it.
- Using a booster seat with a lap-only belt. Boosters are designed for a lap-sash belt; a lap-only belt can cause serious internal injury in a crash.
- Wearing the sash belt under the arm or behind the back to make it ’comfortable’. This defeats the belt, and it is an offence.
- Leaving the harness loose, or doing it up over a thick winter coat, which leaves dangerous slack when it is needed most.
- Assuming the passenger is responsible. For anyone under 16, it is the driver who gets booked.
- Placing a rearward-facing baby capsule in the front seat in front of an active airbag.
- Using a second-hand or overseas restraint that isn’t AS/NZS 1754 approved, has expired, or has already been in a crash.
Check the official source before you rely on this
Rules and pass requirements are set by each state and territory road authority and can change. Always confirm the current details with the official source for your state — Transport for NSW, VicRoads (Victoria), Queensland Transport, or the equivalent authority where you live. This page is a free study guide, not a substitute for the official handbook.
Last verified 4 September 2026 against the Australian Road Rules and your state road authority. Rules, fees and figures change. Always confirm current details with your state road authority before you rely on them.
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Frequently Asked Questions
- If a passenger isn’t wearing a seatbelt, who gets fined - me or them?
- For any passenger under 16, you the driver are legally responsible and are the one penalised, and each unrestrained person counts as a separate offence. Passengers aged 16 and over are responsible for their own belt, although in several states the driver can also be booked for carrying an unrestrained adult.
- When can my child stop using a booster seat and use an adult seatbelt?
- The legal minimum is 7 years, but many children are still too small for an adult belt at that age, so safety experts use the 5-step test: the child should sit fully back against the seat, with their knees bending comfortably at the seat edge, the sash across the middle of the shoulder, the lap belt low on the hips, and be able to stay seated like that the whole trip. If any of those fail, keep them in a booster - most children only fit an adult belt properly at around 145 cm tall.
- Can my child sit in the front seat?
- In a car with two or more rows of seats, a child under 4 must never travel in the front, and a child aged 4 to under 7 may only sit in front if every back seat is already taken by another child under 7 in an approved restraint. In a single-row vehicle like a ute a child may sit in front in the correct restraint, but a rearward-facing restraint must never be placed in front of an active airbag.