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Turn-by-turn navigation is a feature of some GPS navigation devices 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:〔 *Nokia Maps. Devices that use Navteq map data:〔See comparison of web map services〕 * *Garmin car navigators〔 * *Nokia smartphones running either Symbian, Maemo, or Windows Phone (Nokia Maps software is included as standard on Nokia Lumia Windows Phones) *Google Maps and Yahoo! Maps.〔 Devices that use Tele Atlas map data:〔 * *TomTom car navigators〔 * *Android smartphones on-line through Google Maps (included as standard)〔 * *Apple iPhone on-line through Google Maps * OpenStreetMap. Offline-capable applications that use volunteer-contributed data: * *MAPS.ME, a free and open-source app for iOS, Android and BlackBerry OS * *OsmAnd for Android smartphones〔(【引用サイトリンク】title= Osmand Functionality Summary )〕 * *GPS Navigation & Maps - Scout for Android〔(【引用サイトリンク】title= GPS Nav & Maps Google play link )〕 *Other: * *Apple iPhone using iOS 6 * *Apple iPhone < iOS 6 on-line or offline using various commercial software * *Waze, a free app providing turn-by-turn navigation on iOS, Android, Windows Mobile, Symbian, BlackBerry OS and Windows Phone 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Turn-by-turn navigation」の詳細全文を読む スポンサード リンク
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