What age does a child have to be to ride on the back of a street motocycle?

The age at which a child can ride on the back of a street motorcycle varies by jurisdiction, but many places require passengers to be at least 5 or 6 years old. Additionally, some regions mandate that children must be tall enough to reach the foot pegs and wear appropriate safety gear, including a helmet. It's important to check local laws and safety guidelines before allowing a child to ride as a passenger on a motorcycle.