Single-decker buses are public transportation vehicles that have only one level for passengers. They typically feature a flat roof and are designed to carry a moderate number of people, making them ideal for urban and suburban routes. These buses often have large windows for visibility and comfort, allowing passengers to enjoy the scenery during their journey. These buses are commonly used in cities around the world, including in systems like London's bus network and New York City's MTA. Single-decker buses are usually more maneuverable than double-decker buses, making them suitable for narrow streets and busy areas.