Cadillac XT4 Owner Manual (GMNA-Localizing-Europe-16412942) - 2023 -
CRC - 5/25/22
Driving and Operating
231
Navigation System Traffic Sign Detection
The currently displayed sign can either
originate from sign detection using the
camera, or from the navigation system map
data. If the currently displayed sign
originates from map data and the map
information changes, a new sign will be
displayed. This may lead to detection of a
new sign, although no sign on the road may
have been passed.
Limitations
Traffic sign memory may not operate
correctly if:
.
The area of the windscreen, where the
front camera is located, is not clean or is
affected by foreign objects, e.g. stickers,
window tinting, etc.
.
Traffic signs are completely or partially
covered, are too low or high or difficult to
discern.
.
Traffic signs are incorrectly mounted or
are damaged.
.
Traffic signs do not comply with the
approved traffic sign standards.
.
The speed limit is displayed by certain
types of electronic speed signs.
.
There are adverse environmental
conditions, e.g. heavy rain, snow, direct
sunlight or shadows.
.
The headlights are dirty or not correctly
aligned when driving at night.
.
The navigation map data is out of date.
Lane Keep Assist (LKA)
If equipped, LKA may help avoid crashes due
to unintentional lane departures. This
system uses a camera to detect lane
markings. The LKA can be ready to assist at
speeds between 60 km/h (37 mph) and 180
km/h (112 mph). On some vehicles, the
system will instead operate above 50 km/h
(31 mph). LKA may assist by gently turning
the steering wheel if the vehicle approaches
a detected lane marking. It may also provide
a Lane Departure Warning (LDW) alert if the
vehicle crosses a detected lane marking. This
system is not intended to keep the vehicle
centred in the lane. LKA will not assist and
alert if the indicator is active in the direction
of lane departure, or if it detects that you
are accelerating, braking or actively steering.
LKA can be overridden by turning the
steering wheel. If the system detects you
are steering intentionally across a lane
marker, the LDW may not be given. Do not
expect the LDW to occur when you are
intentionally crossing a lane marker.
{
Warning
The LKA system does not continuously
steer the vehicle. It may not keep the
vehicle in the lane or give a Lane
Departure Warning (LDW) alert, even if a
lane marking is detected.
The LKA and LDW systems may not:
.
Provide an alert or enough steering
assist to avoid a lane departure or
crash.
.
Detect lane markings under poor
weather or visibility conditions. This
can occur if the windscreen or
headlamps are blocked by dirt, snow
or ice; if they are not in proper
condition; or if the sun shines directly
into the camera.
.
Detect road edges.
.
Detect lanes on winding or hilly roads.
If LKA only detects lane markings on one
side of the road, it will only assist or
provide an LDW alert when approaching
(Continued)
