A handlebar is a steering mechanism found on bicycles, motorcycles, and some other vehicles. It typically consists of a horizontal bar that allows the rider to control the direction of the vehicle. Handlebars can come in various shapes and sizes, depending on the type of vehicle and the rider's preferences. In addition to providing steering control, handlebars often include grips for comfort and may have additional features like brake levers and gear shifters. Different styles of handlebars, such as drop bars or flat bars, cater to specific riding styles and ergonomic needs, enhancing the overall riding experience.