Jaguar Touch Screen Display JJM 18 42 26 701 - Manual (Page 55)

55
Navigation - Overview
R
Route Guidance Position
Under certain driving conditions, it is
possible that the route guidance may be
inaccurate. Some examples are shown
below:
• Route guidance may occasionally be
given where no turn is required.
• Deviation from a route may cause
incorrect guidance until the route has
been recalculated.
• If there is no road or only a narrow
track to the final destination, guidance
will be given to the nearest point
possible.
• No guidance is given while reversing.
• If driving at high speed or on very
dense road networks, it may not be
possible to recalculate the route in
time for the next instruction.
• On familiar roads, personal route
preferences may not always be
followed.
Time and Distance to
Destination
When a route is calculated, the estimated
time required to drive the route and the
total distance to the destination are
determined. The time is based on the
vehicle travelling at the current speed
settings for each type of road (residential,
main road and freeway). The distance is
based on the current route preference
settings, e.g. Use Toll Roads Yes/No, see
‘Route Preferences’, page 69.
While driving under guidance, the
estimated time (if selected) and distance
remaining to the end of the route are
shown on the screen.
Alternative Routes
During route calculation, up to three
possible routes are calculated. The first
route is calculated using the current route
preference settings. The second route is
also calculated using the preference
settings, except that for Minimise
Time/Dist., the alternative setting is used.
For example, if Minimise Time is currently
selected, then the second route will be
calculated based on Minimise Distance,
with the other settings as selected. For
the third route, the system tries to find
another alternative using different
combinations of the preference settings.
If a suitable alternative is not possible,
only the first and second routes will be
shown.
Languages and Distance Units
The screen text and voice guidance are
available in a number of different
languages. For the list of available
languages, See ‘Changing the Display
Language’, page 74.
Distances are shown on the screen and
given in voice guidance, either in miles or
Metric units (kilometres and metres). For
information on changing the selection,
see ‘User settings’, page 19.
City Name Lists
After entering a street name, the matching
city entries found in the database are
shown. Each entry includes some or all of
the following: district name, city name,
and county name.