Depends where in the world you live and the licence you have obtained. More information please
Ride? or Drive? Legally, anyone that has a driver's license and takes the additional motorcycle endorsement (test) can drive a motorcycle. Rules about how to get a motorcycle endorsement vary in every state. Riding a motorcycle technically requires permission from your parents until you turn 18. Your parents are legally responsible for all your actions until you turn 18.
NO
If you are between 17 - 21 years old in the UK then you are restricted to a motorcycle which has an output of no more than 33bhp e.g Kawasaki Ninja 250R for two years. However if you become over 21 while still within you're 2 year restriction then you can take the accelerated access test which on sucessful completion you will be unrestricted and able to ride any motorcycle of your choice.
No
About 125cc
One that is not on public roads.
Any cc as long as your license is still valid.
no its strictly forbidden because it don't how to sit on motorcycle he will fall or get very scared
It was made in the 1940s
In Britain, a 17-year-old can ride a motorcycle with a maximum engine capacity of 125cc on L plates if they have a provisional license and are in possession of a CBT (Compulsory Basic Training) certificate. To ride a 150cc motorcycle, they would need to complete the full motorcycle test to obtain a Category A1 license. Riding a 150cc bike on L plates without the appropriate license would be illegal.
Quite a bit, depending on where you live, etc. I do not recommend allowing a 16-year-old to ride a motorcycle.
yes. if he's licensed then he can ride it on the street, if he's not licensed he can ride it on private property.