When to Turn the Child Seat Forward-Facing

When we turn a child car seat to face forward is a question that concerns every parent who wants to ensure their child’s absolute safety in the car. The legislation on child car seats has changed with the new Highway Code (KOK), introducing stricter—but necessary—requirements. From when a child seat is allowed in the front passenger seat, to weight and height limits, it is important to know what applies, as well as what experts recommend for maximum safety. Below, we break down everything you need to know.

When do we turn the child car seat to face forward according to the law?

The legislation regarding child car seats, based on the new Highway Code (KOK) and the i-Size standard (UN R129), states that the seat must be rear-facing at least until the age of 15 months. This is the minimum mandatory rear-facing period.

Key points defined by the law

• The child must sit rear-facing until 15 months of age.
• The seat can be turned forward only when the maximum height (e.g., 105 cm) or weight (e.g., 18 kg) limits of the seat have been exceeded.
• Placement in the front passenger seat is permitted only if the airbag is deactivated. Otherwise, it is strictly prohibited.

The law provides clear guidance, but that does not mean the seat should be turned as soon as the child turns 15 months old. In practice, experts have a different view.

What experts recommend: The safest practice

Although the law allows forward-facing after 15 months, pediatricians and road safety experts recommend keeping the seat rear-facing for as long as possible—even up to the age of 4.

Why this matters

• In a frontal collision, rear-facing significantly reduces strain on the neck and spine.
• Young children have weaker neck muscles and a proportionally larger head compared to their body, which makes them more vulnerable.
• Studies show that children seated rear-facing can have up to 5 times greater chances of survival in severe crashes.

So, do not rush to change the seat’s direction just because “the law allows it.” Safety comes first.

Types of child car seats and how they affect seat direction

The category of the child car seat also determines when it is possible—or required—to change the seat’s direction.

Seat types

• Infant carrier (0–13 kg): Designed only for rear-facing use.
• Convertible seat (0–36 kg): Offers both rear- and forward-facing positions, but the switch should be made only when the height/weight limits are met and after 15 months.
• Booster seats (15–36 kg): Suitable only for older children and always forward-facing.

Always read the manufacturer’s manual, as it clearly states the limits and the instructions for changing the seat’s direction.

Frequently Asked Questions

Is a child car seat allowed in the front seat?

Yes, but only if the front passenger airbag is deactivated. Otherwise, it is dangerous and illegal. See more in our article titled: Is a Child Car Seat Allowed in the Front Seat of a Car?

What is the fine if I don’t comply with the new Highway Code (KOK)?

Violating the rules for child car seats can lead to a €350 fine and license removal, under the new Highway Code (KOK).

Which seat is the safest?

The safest seat is the one that matches the child’s weight and height, is installed correctly, and remains rear-facing for as long as possible.

What is i-Size?

It is the European standard (UN R129) based on the child’s height, which makes rear-facing mandatory until 15 months.

Checklist: Before turning the seat forward

• The child is at least 15 months old
• The child has exceeded the height (e.g., 105 cm) or weight (e.g., 18 kg) limits
• The seat supports forward-facing use
• The airbag is deactivated if the seat is placed in the front
• You have consulted the manufacturer’s manual
• Rear-facing is still preferred if the child still fits

When to turn a child car seat is a matter of vital importance. The law, the new Highway Code (KOK), and experts agree on one key point: safety always comes before convenience. For that reason, keep your child rear-facing for as long as the seat and its limits allow—because every detail saves lives.