Private cars, rental cars, taxis, VTCs. The law may vary from one country to next. Hence we recommend that you first consult the regulations of each country. In any case, it is recommended that children under a height 150 cm (in some countries such as Spain it is compulsory up to 135 cm and recommended up to 150 cm) should travel in an approved child restraint system adapted to their height and weight.
Remember that the safest seat is the one in the middle as it is the furthest from both doors. In any case, if the seat has Isofix fixtures and the middle seat does not have this system, we recommended placing the seat behind the co-driver's seat on the right hand side. The Isofix fixture avoids making mistakes when installing. This seat is also easier to access and safer when the child is getting in and out from the pavement. Furthermore, any side collision is most likely to come from the left side as traffic approaches from this direction at intersections. Here we explain why it is better for a child to sit in the back and in the middle.
Finally, it is best to choose a car seat that faces backwards, due to the child's fragile neck, and it is best to drive with the baby facing backwards as long as possible. At least until the age of fifteen months, although, in the market there are car seats designed for children to travel facing backwards until they weigh 25 kg (they usually reach this weight at approximately the age of 7).
Errors must be avoided such as traveling with the child in the passenger seat facing backwards with the airbag activated (it must always be deactivated) or carrying a child in your arms. You can see all the details in this computer image.
At certain times it may not be compulsory, such as when traveling in a taxi around the city. However, at Fundación MAPFRE we insist on the importance of children under 150 cm being fitted with the corresponding approved child restraint system adapted to their weight and height on all journeys.