Vehicle telematics support navigation by using GPS satellites to pinpoint the car's location. In addition to basic navigation, telematics also enable a car's navigation system to display locations of gas stations and other local destinations, traffic information and weather reports.
While general navigation is the most commonly used telematics feature, this technology also allows the GPS system to find nearby gas stations. In some cases, the system can display the business hours of each gas station, diesel availability and prices for all grades of gasoline.
For local destinations, some systems may be able to display restaurant, hotel and shopping locations. This service is enhanced in vehicles with smartphone connectivity, as it allows car's system to access review apps such as Yelp and TripAdvisor.
Traffic information is submitted over satellite radio or standard AM/FM radio and can also be displayed in the navigation system. This service works best on main roads and highways, as there is less information for smaller back roads.
Weather information is also transmitted through radio waves and can be displayed in the navigation system as a current weather map or forecast listing.
Vehicle antennae are significantly more powerful than those in mobile phones, so they are much less likely to lose the signal, even in remote locations.