Wait for age 9-12 months when your child sits independently and holds their...

https://www.bust-bookmark.win/most-experts-recommend-waiting-until-your-baby-reaches-twelve-months-before

Wait for age 9-12 months when your child sits independently and holds their head steady in a helmet. Trailers offer maximum security, while front or rear seats allow for more connection. Start slow and keep rides short for happy, safe family trails.