How Speed Assist Works
Model X displays a speed limit on the
instrument panel and you can choose if and
how you are warned when you exceed the
speed limit. Also, instead of using the
detected speed limit, you can base warnings
on an arbitrary speed limit that you enter
manually.
In situations where Model X is unable to
determine a speed limit, or if Speed Assist is
uncertain that an acquired speed limit is
accurate, the instrument panel may not
display a speed limit sign and warnings do
not take effect.
NOTE:
Speed limit warnings go away after ten
seconds, or when Model X slows down below
the specified limit.
WARNING:
Do not rely on Speed
Assist to determine the appropriate
speed limit or driving speed. Always
drive at a safe speed based on traffic
and road conditions.
Controlling Speed Assist
To adjust the Speed Limit Warning setting,
touch
Controls
>
Autopilot
>
Speed Limit
Warning
, then choose one of these options:
•
Off
- Speed limit warnings do not display
and chimes are not sounded.
•
Display
- Speed limit signs display on the
instrument panel and the sign increases in
size when you exceed the determined
limit.
•
Chime
- In addition to the visual display, a
chime is sounded when you exceed the
determined speed limit.
You can also specify how the speed limit is
determined:
•
Relative
- You can set a speed limit offset
(
+
or
-
) if you want to be alerted only
when you exceed the offset speed limit by
a specified amount. For example, you can
increase the offset to +10 mph (10 km/h)
if you only want to be warned when you
exceed the speed limit by 10 mph (10
km/h).
NOTE:
The offset from speed limit also
affects the number shown in the gray
speed icon on the instrument panel.
•
Absolute
- Manually specify any speed
limit between 20 and 140 mph (30 and
240 km/h).
NOTE:
Speed Assist is not always accurate. In
some situations, the location of a road can be
miscalculated and Speed Assist can display a
speed for a directly adjacent road that may
have a different speed limit. For example,
Speed Assist can assume Model X is on a
controlled-access highway when it is actually
on a nearby surface street, and vice versa.
NOTE:
Your chosen setting is retained until
you manually change it.
Limitations and Inaccuracies
Speed Assist may not be fully functional or
may provide inaccurate information in these
situations:
• Visibility is poor and speed limit signs are
not clearly visible (due to heavy rain,
snow, fog, etc.).
• Bright light (such as from oncoming
headlights or direct sunlight) is interfering
with the view of the camera(s).
• Model X is being driven very close to a
vehicle in front of it which is blocking the
view of the camera(s).
• The windshield is obstructing the view of
the camera(s) (fogged over, dirty, covered
by a sticker, etc.).
• Speed limit signs are concealed by
objects.
• The speed limits stored in the map
database are incorrect or outdated.
• Model X is being driven in an area where
GPS or map data is not available or where
speed limit signs can not be detected.
• Traffic signs do not conform to standard
recognizable formats.
• A road or a speed limit has recently
changed.
Speed Assist
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MODEL X Owner's Manual
