GPS - Satellite Car Navigation Systems
SatNav - Satellite Navigation Systems can take a lot of the
stress out of driving, particularly if you are not entirely sure of how to get
to your destination. However, as with all technological gadgets, there are some
drawbacks.
One of the main functions of the SatNav is to give directions whilst en
route.
Most models have voice prompts which can alleviate the need to look at the screen. If you happen to take a wrong turn the device will give you
directions to get you back on the pre-calculated route or re-calculate an
alternative route to your destination. Additionally, most SatNavs give your approximate speed
and the current speed limit in the area through which you are passing. The
estimated journey time and distance to destination is also indicated on screen.
Other additional SatNav features include the locations of amenities such
as car parks, hotels, service stations and local attractions. Weather
information and car park space availability can also be standard on certain
models. The list does not stop there.
Advanced systems can provide information on traffic congestion, and thus the
facility to circumnavigate these problem areas if desired.
SatNav works by using the
Global Positioning System GPS network, whereby the vehicle's
position
on the road is located via sattelite link-up.
The drawbacks associated with
Car Satellite Navigation Systems are
similar to those linked to using a mobile phone while driving. The danger of
distraction. However, those systems that give verbal instructions have an
advantage in that the driver can keep their eyes on the road.
Car Satellite Navigation System - Limitations
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SatNavs do not work whilst driving through tunnels. Once driving back
out in the open it could take a few minutes for the signal to be
re-established.
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SatNavs may suffer from intermittent signal loss whilst driving through
built up city centres. This could leave you guessing which turn off you need to
take.
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SatNav voice instructions do not always match the onscreen directions.
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SatNav directions are only as good as the maps you have installed.
Depending on your destination you may need to download up to date maps.
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SatNavs do not work well with athermic - heat reflecting windscreens.
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Satellite Car Navigation
Systems can take a lot of the stress out
of driving, however be aware of the
limitations.
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