Concept

Turn-by-turn navigation

Turn-by-turn navigation is a feature of some satellite navigation devices where directions for a selected route are continually presented to the user in the form of spoken or visual instructions. The system keeps the user up-to-date about the best route to the destination, and is often updated according to changing factors such as traffic and road conditions. Turn-by-turn systems typically use an electronic voice to inform the user whether to turn left or right, the street name, and the distance to the next turn. Mathematically, turn by turn navigation is based on the shortest path problem within graph theory, which examines how to identify the path that best meets some criteria (shortest, cheapest, fastest, etc.) between two points in a large network. Real-time turn-by-turn navigation instructions by computer was first developed at the MIT Media Laboratory by James Raymond Davis and Christopher M. Schmandt in 1988. Their system, Backseat Driver, monitored the car's position using a system developed by NEC that communicated over a cellular modem with software running on a Symbolics LISP Machine at the Media Lab. The computer then used a speech synthesizer to compute appropriate directions and spoke them to the driver using a second cellular phone. Major mapping services that offer turn-by-turn navigation, grouped by map data provider: HERE Technologies: HERE WeGo, a free online and offline navigation app for Android, Fire OS and iOS Garmin, road portable navigation devices, car built-in navigation devices Genius Maps, a paid online and offline turn-by-turn navigation app for Android, HarmonyOS and iOS Google: Google Maps, a free online navigation app for Android, iOS and KaiOS TomTom: TomTom car, motorcycle and truck portable navigation devices, car and truck built-in navigation devices, Android and iOS smartphones and tablets online and offline through AmiGO Apple Maps, a free online navigation app for iPhone and ipad using iOS 6 or later Petal Maps, a free online and offline navigation app for Android 7 or later, HarmonyOS and iOS Windows Maps, a free online and offline navigation app for Windows OpenStreetMap.

Official source

https://en.wikipedia.org/wiki/Turn-by-turn_navigation

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Official source

https://en.wikipedia.org/wiki/Turn-by-turn_navigation

About this result

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