A stationary bicycle stand or bike rack is used outdoors to attach bicycles securely. Many are free standing outdoors or indoors. Others are attached to the ground or to a building. They are called stationary bike stands.
When they are used outdoors they are mostly in commercial and public areas like companies, schools, railway stations and parks.While indoors they are used usually for private bicycle parking.
There are different styles of racks like the Inverted U, Serpentine, Bollard or Grid but the most effective bicycle stands are where you can secure the wheel and the frame of the bike. They should be weather resistant and functional and are often made of stainless steel.