Proprieties of motorcycle?

You do not have to own a motorcycle to get a licence, but you will need to borrow a bike to take the road test unless you buy one in the meantime. Not only do you not need to own a motorcycle, but...

A motorcycle (also called a motorbicycle, motorbike, bike, or cycle) is a single-track, two-wheeled motor vehicle powered by an engine.

If you value your own health. A motorcycle is one of the few machines that uses a human body to protect itself from damage.

it depends on your state laws you should go an look up the laws in your state most states you don't need one like South Carolina and Florida but again it depends on your state.