section_path: Control robotics areas/Locomotion/Rolling robots
section_name: Rolling robots
paragraph_text: Rolling robots
  
  For simplicity, most mobile robots have four wheels or a number of continuous tracks. Some researchers have tried to create more complex wheeled robots with only one or two wheels. These can have certain advantages such as greater efficiency and reduced parts, as well as allowing a robot to navigate in confined places that a four-wheeled robot would not be able to.