Autopilots are electronic systems that control the navigation and direction of an aircraft or other vehicle. There are several synonyms for the word "autopilots" that can be used interchangeably in different contexts. Some of these synonyms include automatic pilot, fly-by-wire, flight control system, computerized navigation, and guidance system, among others. Each of these synonyms refers to a system that helps to automate some or all of the functions of a pilot or driver. Autopilots are an essential component of modern transportation systems and have greatly improved the safety and efficiency of air and land travel.