A bicycle is a human-powered vehicle able to transport people by pedaling to move a chain connected to the rear wheel. Attached to the frame are handlebars for people to grab onto and steer the front wheel to be able to change directions. Alongside the handlebars is a seat. All bicycles come with different purposes: road bicycles are for smooth rides on the pavement because of their thin tires, touring bicycles are meant for longer ride time and carrying more objects, mountain bicycles are for off-road riding and going on trails, and cruisers are designed for casual bicycle riders aiming for comfort. Often referred to as a cycle or bike, bicycles are allowed by state law to be ridden on the roadway or specific off-road trails.