Generally if the GPS unit is regularly updated then they can be very accurate in giving directions. However, there are cases where GPS units have failed and left drivers in bad situations, so it's important to not blindly follow the directions given.
Yes, very accurate.
From portable and in-dash navigation systems to marine, handheld and fitness GPS navigation
the GPS makes a task easier apex
Now the GPS is electronic and has maps, phones, and it speaks to you.
In-dash units:Pros* Look a lot neater* Integration with stereo system so that audio can cut out when GPS directions are being given or in telephone calls.* Harder to steal* Better GPS reception* Dead-reckoning (ie will still give you position when GPS signal is lost).* Big screens* No wires running across the dash.Cons* Unit and add-ons are expensive* Expensive map upgrades* Limited GPS features* Some units only have coverage of major cities and highway.* Can't take it with you if you don't travel with your vehicle.* No regular speed camera updates.* No regular firmware updates.* No traffic updates* Will the GPS unit still be supported in 5-10 yearsPortable units:Pros* Units are cheaper* Cheaper map upgrades* Firmware regularly updated to provide new features or bug fixes* Can take the GPS with you if you travel.* Generally have more GPS features* Most units have regular safety camera updates.* Map coverage is generally quite good.Cons* Smaller screen* Portability makes them easier to steal.* Generally can't integrate with car audio system.* No dead reckoning, although some units have begun to implement it.Recommended portable GPS is Tomtom and Eonon. Such as:http://www.eonon.com/GPS-Navigation.HTML?utm_source=wiki.answers.com&utm_medium=answer&utm_campaign=answer
Most GPS units are accurate to within a few metres ( 10-20 ).
The military has gps technology accurate to approximately 1 millimeter. conventional gps units (like the one in your car) are accurate to about 15 feet.
A watch GPS is just as accurate as a regular dash mounted automotive GPS. They have been able to consolidate the same technology into very small packages, so there is no loss of accuracy.
GPS signals are processed in the GPS unit and displayed, and they are also processed via three Global Position Satellites. All four units work together and process GPS signals (some to the satellites from the GPS, and some from the satellites to the GPS) to create an accurate position.
The Garmin Forerunner 405 GPS are an accurate brand of GPS and a good watch.
The cheapest GPS units include some of the Tom Tom units with less features. Top recognized brands on the market include the Tom Tom GPS and the Garmin GPS units.
The oldest GPS units don't have the capability to make use of the latest Garmin software.Some of it's designed to work on laptops with gps units.
Magellan GPS units are indeed made by the USA. They are, in fact, GPS systems made by the US government in the USA so Magellans are 100 percent USA GPS units.
The GPS is incredibly accurate. The GPS uses Google Maps and MapQuest. If you are concerned about the GPS, download the Google Maps app to get turn by turn directions.
An in-dash gps system would be better in a car. Handheld gps systems seem to generally have smaller screens and are made specifically for outdoor use. An in-dash gps is designed for in car use.
It depends on the accuracy of your GPS. An accurate GPS can give you the exact coordinates of your location in the world. For the most part, the higher the cost of a GPS, the more accurate it is.
Yes, very accurate.