A single speed bicycle is a type of bike that has only one gear ratio, meaning it does not have multiple gears to shift between. This design simplifies the riding experience, making it easier to maintain and operate. Riders can focus on pedaling without worrying about changing gears, which is especially beneficial for flat terrains. These bicycles are often lightweight and have a minimalist design, making them popular for urban commuting. They are ideal for short distances and are commonly used in cities where riders encounter less varied terrain. The simplicity of a single speed bicycle also contributes to its affordability and ease of use.