Child Car Seats: The Errors That Matter

Car seats are very important for your children when it comes to road safety. Read our car seat guide to learn what you should note when purchasing and using car seats!

Most car seats in Singapore are fitted incorrectly, and the errors are consistent enough to list. Two of them, a loose harness and a bulky jacket, are the ones that turn a survivable crash into a serious injury.

What the law says: children under 1.35m must be secured in an approved child restraint, booster seat or adjustable seatbelt appropriate to their height. In taxis, children under 1.35m must sit in the rear.

The law is only a minimum. Best practice goes much further, and the gap between the two is where most preventable injuries happen.

How long to keep them rear-facing

This is the single most important decision you’ll make.

In a frontal crash, the most common serious type, a rear-facing seat spreads the force across the whole back of the shell. Forward-facing, that force goes through the harness into the chest, and the head is thrown forward. A young child’s head is disproportionately heavy and their neck isn’t yet strong, so the difference in outcomes is large.

Rear-facing until at least 15 months as an absolute minimum.
Until 3 or 4 if the seat allows it. Extended rear-facing seats exist and are worth seeking out.
Legs bent or crossed against the seat back is fine. Children find it comfortable, and leg injuries in rear-facing seats are rare. This is the objection people raise and it isn’t supported.
Never rear-facing in a front seat with an active airbag. This is fatal, not merely inadvisable. If it’s unavoidable, the airbag must be deactivated.

Common fitting errors

Harness too loose. Do the pinch test: after tightening, try to pinch the webbing horizontally at the shoulder. If you can gather a fold between your fingers, it’s too loose.
Bulky clothing under the harness. A padded jacket compresses instantly in a crash, leaving several centimetres of slack that weren’t there when you fitted it. Strap them in without the jacket, then put the jacket on backwards over the harness, or use a blanket.
Chest clip in the wrong place. It goes at armpit level, not over the stomach. On the belly it does nothing and can cause internal injury.
Harness slots at the wrong height. Rear-facing: at or just below the shoulders. Forward-facing: at or just above.
Loose installation. Grip the seat at the belt path and pull firmly side to side and front to back. More than about 2.5cm of movement means it isn’t tight enough.
Moving to a booster too early. Stay in a harnessed seat until the child outgrows it by height or weight, not by age, and not because they seem big.
Aftermarket accessories. Head supports, strap pads and seat protectors that didn’t come with the seat weren’t crash-tested with it. Don’t add them.
Second-hand seats. Never, unless you know the full history. A seat involved in a crash must be replaced even if it looks undamaged, and you can’t verify that from a listing. Check the expiry date too: plastic degrades.

Boosters and when to stop using them

A booster raises the child so the adult seatbelt sits correctly. Stay in one until the belt fits properly without it, which is usually well past 1.35m:

Back flat against the seat, knees bending naturally at the edge
Lap belt low across the hips and upper thighs, not the stomach
Shoulder belt across the middle of the shoulder and chest, not the neck
Able to stay in position for the whole journey without slouching

Never tuck the shoulder belt behind the arm or back. Children do this because it’s uncomfortable, and it removes the upper body restraint entirely.

Taxis and private hire

The exemption for taxis is a legal one, not a physical one. A crash doesn’t know what kind of car it is.

Bring your own seat where practical, or book a service that provides one.
Rear seat always for a child under 1.35m.
Never on an adult’s lap. In a crash an adult can’t hold a child, and the adult’s body weight is added on top of them.
Never share a seatbelt between an adult and a child.

Two more safety points

Never leave a child in a parked car. Not for a minute, not with the window down. A car interior in Singapore reaches dangerous temperatures within minutes, and small children overheat far faster than adults.

Don’t let a young baby sleep in a car seat outside the car. The semi-upright position can allow a young infant’s head to fall forward and restrict their airway. For journeys, break every couple of hours and take them out; at home, transfer them to a flat surface.

Frequently asked questions

What’s the car seat law in Singapore?

Children under 1.35m must be secured in an approved child restraint, booster seat or adjustable seatbelt appropriate to their height, and must sit in the rear in taxis. That’s a legal minimum, not best practice, and the gap between the two is where most preventable injuries occur.

How long should a child stay rear-facing?

At least 15 months as an absolute minimum, and until three or four if the seat allows. In a frontal crash a rear-facing seat spreads the force across the whole shell instead of through the harness and neck, and the difference in outcomes is substantial. Bent or crossed legs are comfortable and not a problem.

Can my child wear a jacket in the car seat?

No. A padded jacket compresses instantly in a crash, leaving slack that wasn’t there when you tightened the harness. Strap them in without it and put the jacket on backwards over the harness, or use a blanket.

How tight should the harness be?

Do the pinch test. After tightening, try to pinch the webbing horizontally at the shoulder. If you can gather a fold, it’s too loose. The chest clip belongs at armpit level, never over the stomach.

Can I buy a second-hand car seat?

Not unless you know its full history. A seat involved in any crash must be replaced even if it looks undamaged, and that can’t be verified from a listing. Check expiry dates too, since the plastic degrades.

Is it safe to hold my child on my lap in a taxi?

No. The taxi exemption is legal, not physical. In a crash an adult can’t hold on to a child, and the adult’s own body weight is added on top of them. A child under 1.35m should be in the rear, ideally in a seat you’ve brought.

What to remember

Rear-facing as long as the seat allows: at least 15 months, ideally to three or four.

Pinch test the harness every time. Jacket off, then over the top. Chest clip at armpit level.

No second-hand seats, no added accessories, and never a lap in a taxi.

And never leave a child in a parked car here, not for a minute.