Booster seat for 10 year old?

[Europelover]

Hello,

we will be visiting the Salzkammergut area this July and need to know if the Austrian law requires a booster seat for my 10 year old. We will be renting a car and drive through Austria. I am fully aware about the vignette requirements, however, I couldn't find concrete information about child seat requirements for 10 year olds. Is a booster seat required by law, or just recommened? Can anyone assist, please?

[Luvbeers]

front seat and under 150 cm. rear seat under 135 cm.

[Europelover]

front seat and under 150 cm. rear seat under 135 cm.

Thank you Luvbeers.

Does this mean that a booster seat is required on a rear seat if the child's height is under 135 cm?

[Luvbeers]

yes if he or she is under 14.