Most kids ride safely around age one. Your little one needs strong neck muscles...

https://qqpipi.com//index.php/What_is_Safer_on_a_Busy_Street:_Trailer_or_Rear_Seat%3F

Most kids ride safely around age one. Your little one needs strong neck muscles to support a helmet. Try a front seat for interaction, a rear seat for better stability, or a trailer if they need to nap. Always prioritize a steady, upright posture