For a wise choice of auto GPS
1. Technical elements 2. Map making 3. Ergonomics and navigationTechnical elements The reception quality of GPS signal is obviously vital. Nowadays, its the SiRF Star III receiver that is considered to be the most excellent.
The quality of screen and graphic design. You have to verify the size, light, and anti-reflection effect. Attention, a reader GPS is often placed in the plain sunlight, so it is very necessary to have a very good light quality. On the other hand, verify if there is a night mode with less light in order not to bother the night drive. Its also a problem of safety. The models that could be tailored to your specifications are preferred.
The sound and vocal quality. The GPS voice would accompany you throughout your trip. So it is preferable to choose a voice that pleases you. With some models you could download some other voices that are offered via internet.
The fixation. This may seems to be incidental. But there is no other thing in the world that is more annoying when GPS device falls off after a few vibrations. The angle of the screen is also a concern.
The supply. In general, a cord connects to the cigar-lighter. For those who prepare to put their navigation outside of their vehicle, they have to make sure they have a very good battery and/or they can get supply from USB cable.
Map making The quality of map information. Are the maps offered the recent? Which territory do the maps cover? The country, Europe, or the world? The price of the device lies in the supply of these information.
The possibility of updating. Nowadays, most brands offer the possibility to update the GPS map via an Internet website. You could get different maps at variable prices, of different quality and of different updating frequency. For example, you could subscribe, purchase the updated disk drive and you could use the free version.
The radars and traffic information. The real time updated information are broadcast with one other technology concerning RDS/TMS (RDS also uses car radios to transmit text information). Two types of reception are available: integrated into GPS or through an external antenna. When you buy the GPS, you could choose whether or not to include the subscription of traffic information.
The points of interests (POI). It is about the information along your route: service station, hotels, restaurants, and others.
Ergonomics and navigation Ergonomics is the study of working conditions, as for the workplace, intended to maximize productivity by minimizing operator fatigue and discomfort.
The ergonomics of interface. Even for a child of six years old who knows how to read and write could identify the interface and plan out a route. In any case, you could point out and validate your destination at your fingertip.
The adaption of the navigation. When GPS first appeared, the navigation voice always told you, take a half-turn as soon as possible. This wont happen anymore. In fact, nowadays, the system would re-calculate the route in real time if you have not observed its instructions.
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