Car seats are essential for keeping your baby safe when travelling by car. However, they are designed for travel only, not for long periods of sleep. Spending too long in a seated position can make it harder for young babies to breathe comfortably. This page explains how to use car seats safely and reduce potential risks while out and about with your baby.
Car seats and sleep
It’s normal for babies to fall asleep in their car seat while travelling. This is usually fine for short journeys, but car seats are not a safe place for prolonged sleep. Once you reach your destination, take your baby out of the car seat and place them on a firm, flat surface such as a cot or Moses basket.
If you’re planning a longer journey, make regular stops so you can take your baby out of the car seat, give them time to stretch, and check their position.
Keeping the risk low while travelling
To help keep your baby safe in the car:
- Avoid long, uninterrupted journeys with young or premature babies
- Take regular breaks to check on your baby
- If possible, have another adult sit in the back so they can keep an eye on your baby
- If your baby slips or slumps forward, stop as soon as it’s safe and reposition them
These steps help keep your baby’s airway clear and reduce risks while travelling.
Choosing the right car seat
Always use a rear‑facing car seat, as this gives better protection for your baby’s head, neck and spine. Make sure the car seat:
- Is suitable for your baby’s weight and size
- Is fitted correctly. Many retailers can help with fitting and safety checks
A correctly fitted car seat makes a big difference to your baby’s safety.
Avoiding overheating
Babies can overheat easily, which can be dangerous. To help keep your baby at a safe temperature:
- Remove hats, coats and snowsuits once your baby is in the car
- Check your baby’s temperature by feeling their tummy or the back of their neck
- If your baby feels hot, sweaty or clammy, remove a layer of clothing
Second‑hand car seats
It’s best not to use second‑hand car seats unless you are certain of their full history. A car seat may have hidden damage from an accident or wear and tear that makes it less safe, even if it looks fine.
Safety standards to look for
Always check that your car seat meets recognised safety standards. Look for:
- An E‑mark label, showing it meets European safety requirements
- Compliance with current car seat standards such as R44 or the newer i‑Size (R129)
Car seats save lives and are essential for travel, but they are not designed for long sleeps. Use them for journeys, take regular breaks, avoid overheating, and move your baby to a safe sleep space as soon as you arrive at your destination.
Further information on the Lullaby Trust website
Car seats, how to choose them and frequently asked questions