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. [1] 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. [2] 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. [3]
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. [4] 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: [5]
TomTom N.V. is a Dutch multinational developer and creator of location technology and consumer electronics. Founded in 1991 and headquartered in Amsterdam, TomTom released its first generation of satellite navigation devices to market in 2004. As of 2019 the company has over 4,500 employees worldwide and operations in 29 countries throughout Europe, Asia-Pacific, and the Americas.
Traffic reporting is the near real-time distribution of information about road conditions such as traffic congestion, detours, and traffic collisions. The reports help drivers anticipate and avoid traffic problems. Traffic reports, especially in cities, may also report on major delays to mass transit that does not necessarily involve roads. In addition to periodic broadcast reports, traffic information can be transmitted to GPS units, smartphones, and personal computers.
Satellite navigation software or GNSS navigation software usually falls into one of the following two categories:
A Personal Navigation Assistant (PNA) also known as Personal Navigation Device or Portable Navigation Device (PND) is a portable electronic product which combines a positioning capability and navigation functions.
A satellite navigation device or satnav device, also known as a satellite navigation receiver or satnav receiver or simply a GPS device, is a user equipment that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS). A satnav device can determine the user's geographic coordinates and may display the geographical position on a map and offer routing directions.
Navigon GmbH was a Würzburg, Germany-based manufacturer of GPS devices and GPS navigation software. The company was privately owned, until in June 2011, it was announced that Navigon was to be acquired by Garmin and become a subsidiary of the company. With effect from October 31, 2011, Navigon has changed its legal entity from corporation (Aktiengesellschaft) to GmbH.
Here Technologies is a Dutch multinational group specialized in mapping technologies, location data, and related automotive services to individuals and companies. It is majority-owned by a consortium of German automotive companies and American semiconductor company Intel whilst other companies also own minority stakes. Its roots date back to U.S.-based Navteq in 1985, which was acquired by Finland-based Nokia in 2007. Here is currently based in The Netherlands.
Navit is a free and open-source, modular, touch screen friendly, car navigation system with GPS tracking, realtime routing engine and support for various vector map formats. It features both a 2D and 3D view of map data.
Google Maps Navigation is a mobile application developed by Google for the Android and iOS operating systems that later integrated into the Google Maps mobile app. The application uses an Internet connection to a GPS navigation system to provide turn-by-turn voice-guided instructions on how to arrive at a given destination. The application requires a connection to Internet data and normally uses a GPS satellite connection to determine its location. A user can enter a destination into the application, which will plot a path to it. The app displays the user's progress along the route and issues instructions for each turn.
Waze Mobile Ltd, doing business as Waze, formerly FreeMap Israel, is a subsidiary company of Google that provides satellite navigation software on smartphones and other computers that support the Global Positioning System (GPS). In addition to turn-by-turn navigation, it incorporates user-submitted travel times and route details while downloading location-dependent information over a cellular network. Waze describes its application as a community-driven initiative that is free to download and use.
Sygic is a Slovak company of global automotive navigation systems for mobile phones and tablets. The company was founded in 2004 and is headquartered in Bratislava, Slovakia. It became the first company to offer navigation for iPhone and second for Android. In 2015 Sygic reached milestone of 100 million downloads of its navigation app.
Telenav, Inc. is a wireless location-based services corporation that provides services including Global Positioning System (GPS) satellite navigation, local search, automotive navigation solutions, mobile advertising, enterprise mobility and workflow automation. The company’s headquarters are located in Santa Clara, California in the United States with additional offices in the U.S., Germany, Japan, Romania, China, and Brazil.
This is a list of notable commercial satellite navigation software for various devices, with a specific focus on mobile phones, tablets, tablet PCs,.
OsmAnd is a map and navigation app for Android and iOS. It uses the OpenStreetMap (OSM) map database for its primary displays, but is an independent app not endorsed by the OpenStreetMap Foundation. It is available in both free and paid versions; the latter unlocks the download limit for offline maps and provides access to Wikipedia points of interest (POIs) and their descriptions from within the app. Map data can be stored on the device for offline use. Using the device's GPS capabilities, OsmAnd offers routing, with visual and voice guidance, for car, bike, and pedestrian. All of the main functionalities work both online and offline.
Apple Maps is a web mapping service developed by Apple Inc. As the default map system of iOS, iPadOS, macOS, and watchOS, it provides directions and estimated times of arrival for driving, walking, cycling, and public transportation navigation. A "Flyover" mode shows certain urban centers and other places of interest in a 3D landscape composed of models of buildings and structures.
This article contains a list with gratis satellite navigation software for a range of devices. Some of the free software mentioned here does not have detailed maps or the ability to follow streets or type in street names. However, in many cases, it is also that which makes the program free, avoid the need of an Internet connection, and make it very lightweight. Very basic programs like this may not be suitable for road navigation in cars, but serve their purpose for navigation while walking or trekking, and for use at sea. To determine the GPS coordinates of a destination, one can use sites such as GPScoordinates.eu and GPS visualizer.
Android Auto is a mobile app developed by Google to mirror features of a smartphone on a car's dashboard information and entertainment head unit.
Here WeGo is a web mapping and satellite navigation software, operated by HERE Technologies and available on the Web and mobile platforms. It is based on HERE's location data platform, providing its in-house data, which includes satellite views, traffic data, and other location services. Maps are updated every two or three months.
Locus Map is a multi-functional Android navigation app. Primarily it is designed and used for leisure time outdoor activities like hiking, biking, or geocaching. The app is also used by professionals e.g. by S&R teams or for collecting geospatial data.
TomTom AmiGO, formerly known as TomTom Speed Cameras, is a satellite navigation software for Android and iOS mobile devices, created and operated by the Dutch company TomTom. Using GPS, it provides turn-by-turn navigation, speed camera alerts and incorporates user-submitted information. It is a community-driven initiative and is free, unlike the premium TomTom GO Navigation app offered by TomTom.