freightliner M2 Plus 2023 Manual page 105

spray, smoke, or other circumstances that limit
visibility.
•
There is glare due to oncoming traffic, direct
sunlight, or reflections from wet road surfaces.
•
The windshield in the area of the camera is
dirty, misted up, damaged, or covered by a
sticker.
•
No lane markings or several varied lane
markings are present, such as in a
construction zone.
•
The lane markings are worn, dark, or
covered—such as by sand, dirt, or snow.
•
The distance from the vehicle in front is too
small and prevents the lane markings from
being detected.
•
The lane markings change rapidly, such as
when lanes merge, branch off, or cross.
•
Lanes are very narrow or winding.
•
Shade conditions on the road surface vary
widely.
The driver must adapt their driving style to current
conditions. LDW cannot take the road and weather
conditions into account, nor the prevailing traffic
situation. The driver is responsible for the distance to
the vehicle in front, for vehicle speed, braking in
good time, and remaining in the lane.
Overview
LDW monitors the area in front of the vehicle using
the multipurpose camera mounted at the top of the
windshield. When LDW is active and detecting lane
markings, it visually and audibly warns the driver if it
thinks the vehicle may be leaving the lane
unintentionally.
LDW only needs one identifiable lane line to function.
Functions and Activation Conditions
for Lane Departure Warning
The Detroit Assurance LDW system is designed to
warn the driver as the vehicle crosses the outer
boundary of the lane marking. This may differ from
other LDW systems which issue a warning as the
driver approaches the inside of the lane marking. If
the system warns at, or just beyond the outer edge
of the lane marking, the system is performing as
designed. If the warning does not occur, or occurs
Detroit Assurance 5.0
after an excessive lane departure, the system may
not be operating properly.
Lane departure warning only issues warnings if the
speed is above approximately 37 mph (60 km/h).
The lane markings on the driver display screen show
the status and state of LDW:
•
No lane markings indicate that LDW is off.
•
Outlined lane markings indicate that LDW is
not ready.
•
Solid white markings indicate LDW is on and
ready to issue warnings.
•
Red lane markings indicate a lane departure is
occurring; red lane markings are a visual
warning from the LDW system.
In addition to the visual warning, when driving over
lane markings unintentionally, the volume of audio
equipment like the radio and/or hands-free systems
is muted and a "rumble-strip noise" emits from the
side of the vehicle driving over the lane markings.
LDW does not issue an audible warning when:
•
the turn signals are switched on
•
if the driver is braking or accelerating
•
if the driver is making a sharp turn
•
if a driving safety system such as ABA5,
stability control, or ACC intervenes.
Activating or Deactivating Lane
Departure Warning (LDW)
When the engine is turned on, LDW is automatically
activated.
NOTE: There is no audible self-test of the
"rumble-strip noise" of LDW when the key is
turned on.
Pressing the physical LDW OFF switch deactivates
LDW for fifteen minutes. See
is deactivated, the switch illuminates.
A driver might want to turn off LDW on winding roads
or when driving through construction zones or other
areas where lane markings are not clear.
LDW is not active if:
•
the driver presses the LDW OFF switch;
•
the system is searching for a lane.
Fig. 6.12. When LDW
6.12