ON THE MOVE » NAVIGATION DEVICES

Being ‘up to the minute’ is vital. Whether it’s just keeping in touch with your office, receiving the latest information or being able to navigate to your destination, in car technology is key.

In this section we give you the best possible information on using your mobile and data products 'on the move'. Simply click on the subject links on the right.

HOW DO THEY WORK? The main purpose of any navigation system is to guide the user to their chosen destination. Features such as Points of Interest (POI), traffic avoidance etc should be in a logical place but not prioritised over more common tasks. Taking inspiration from mobile phone interfaces. Menu items are indicated by icons large enough to be identified and selected at a glance, along with a word or two for identification. Screens are sufficiently uncluttered to allow the user to take in information at a glance, minimising distraction from the road. Menu systems should be shallow enough to allow one to remember or quickly identify menu paths to use whilst driving.

Controls should be tailored for use whilst driving. Complete touch screen operation is ideal for reducing attention taken from the road. However, touch screens must support finger control, as stylus control is not appropriate whilst driving.

Voice guided features increase the users’ confidence in the product and help keep eyes on the road. It should be possible to follow the route by using just the voice instructions. Generally, each voice instruction should contain the following information:

•	Distance to next action e.g. ‘400 yards’.
•	What the next action is e.g. ‘turn right’.
•	Whether the action occurs at a roundabout or junction.
•	It should be easy to manually repeat the most recent voice instruction.
•	The distance at which the next instruction is given should reflect the speed of travel. More warning should be given at motorway junctions compared to urban areas.
•	Allowing the user to choose the dialect, language and gender from a range of options, is preferable.

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