It depends a bit on the bicycle, the age of the riders and the local laws - but yes, it may well be illegal. Two adults on the same bicycle is often illegal unless the bicycle is specially built for that purpose - like a tandem.
One adult is usually allowed to carry a kid (depending on weight/age and seating arrangement) though.
A tandem is a bicycle made for two riders.
Two people can ride together on a side by side tandem bicycle by sitting next to each other and pedaling in sync to move the bike forward.
It is to ride a bicycle.
"Would you like to ride a tandem bicycle together?"
Two people can ride a bicycle together by having one person sit in the front and pedal, while the other person sits behind and holds onto the first person for balance. Both people need to communicate and work together to steer and pedal the bicycle.
Two people can enjoy a leisurely ride on a bicycle together by choosing a scenic route, communicating effectively, taking turns leading, and maintaining a comfortable pace. It's important to ensure both riders are comfortable and have a good time.
To comfortably ride a bicycle together, two people can adjust the seat height and position, communicate about pedaling and balance, and distribute weight evenly on the bike. It's important to find a rhythm and work together to maintain stability and coordination while riding.
Most tandems can be ridden by one person, although they're meant for two.
Depends on where you intend to ride. But If you are going to ride in traffic I'd recommend two.
Working in tandem means working together or at the same time. A tandem is a bicycle that two people can ride together.
The "bi" in bicycle means two. If it had one it would be a unicycle which is harder to ride and not as useful. If it had three it would be a tricycle and not handle as well.
If you're asking if it's difficult to ride a bicycle the answer is yes. It does take quite an effort to learn how to ride them.