Turn-by-turn navigation is a feature of some GPS navigation device

GPS navigation device

A GPS navigation device is any device that receives Global Positioning System signals for the purpose of determining the device's current location on Earth...

s where directions for a selected route are continually presented to the user in the form of spoken and 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 how much distance to the turn.

Devices and services

Major mapping services that offer turn-by-turn navigation, grouped by map data provider :

• Ovi Maps. Devices that use Navteq
  NAVTEQ
  Navteq is a Chicago, Illinois-based provider of Geographic Information Systems data and is a dominant company in providing the base electronic navigable maps...
  
   map data :
  • Garmin
    Garmin
    Garmin Ltd. , incorporated in Schaffhausen, Switzerland, is the parent company of a group of companies founded in 1989 by Gary Burrell and Min Kao , that develops consumer, aviation, and marine technologies for the Global Positioning System...
    
     car navigators
  • Nokia
    Nokia
    Nokia Corporation is a Finnish multinational communications corporation that is headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki...
    
     smartphones running either Symbian
    Symbian
    Symbian is a mobile operating system and computing platform designed for smartphones and currently maintained by Accenture. The Symbian platform is the successor to Symbian OS and Nokia Series 60; unlike Symbian OS, which needed an additional user interface system, Symbian includes a user...
    
    , Maemo
    Maemo
    Maemo is a software platform developed by the Maemo community for smartphones and Internet tablets. It is based on the Debian Linux distribution, but has no relation to it...
    
    , or Windows Phone 7
    Windows Phone 7
    Windows Phone is a mobile operating system developed by Microsoft, and is the successor to its Windows Mobile platform, although incompatible with it. Unlike its predecessor, it is primarily aimed at the consumer market rather than the enterprise market...
    
    
• Google Maps
  Google Maps
  Google Maps is a web mapping service application and technology provided by Google, free , that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit, and maps embedded on third-party websites via the Google Maps API...
  
   and Yahoo! Maps
  Yahoo! Maps
  Yahoo! Maps is a free online mapping portal provided by Yahoo!.-News:*On May 16, 2007, Yahoo! released a new map style designed by the cartography company...
  
  . Devices that use Tele Atlas
  Tele Atlas
  Tele Atlas is a Netherlands-based company founded in 1984 which delivers digital maps and other dynamic content for navigation and location-based services, including personal and in-car navigation systems, and provides data used in a wide range of mobile and Internet map applications...
  
   map data :
  • TomTom
    TomTom
    TomTom NV is a Dutch manufacturer of automotive navigation systems, including both stand-alone units and software for personal digital assistants and mobile telephones. It is the leading manufacturer of navigation systems in Europe. TomTom's customer service is located in Amsterdam, Netherlands...
    
     car navigators
  • Android smartphones on-line through Google Maps
    Google Maps
    Google Maps is a web mapping service application and technology provided by Google, free , that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit, and maps embedded on third-party websites via the Google Maps API...
    
     or off-line with software available in Android Market
    Android Market
    Android Market is an online software store developed by Google for Android OS devices. Its gateway is an application program called "Market", preinstalled on most Android devices, allows users to browse and download mobile apps published by third-party developers...
    
    
  • Apple iPhone on-line through Google Maps
    Google Maps
    Google Maps is a web mapping service application and technology provided by Google, free , that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit, and maps embedded on third-party websites via the Google Maps API...
    
     or off-line with software available in App Store