lane assist VOLVO S90 2018 Owner´s Manual

DRIVER SUPPORT
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353
Selecting guidance to a rest area ifthe Driver Alert Control warning hasbeen givenThe
Rest Stop Guidance function can be
switched on or off.
When the guide is activated, it will automatically display suggestions for a suitable place to take abreak if the DAC warning is given. To select
Rest Stop Guidance:
1. Tap
Settings in the center display's Top
view.
2. Select
My CarIntelliSafeDriver Alert
Control.
3. Select/deselect
Rest Stop Guidance to
activate/deactivate the function.
Related information
• Driver Alert Control (p. 351)
Driver Alert Control limitations
Driver Alert Control (DAC) functionality may be reduced in certain situations.
In certain situations, the system may provide a warning even if it has not detected a change indriving behavior, e.g.:
• in strong crosswinds
• on grooved road surfaces.
WARNING
In certain cases, driving behavior might not be affected despite the driver's fatigue – whenusing the Pilot Assist function – resulting inthe driver not getting a warning from DAC. It is therefore very important to always stop and take a break at the slightest sign of fati-gue, regardless of whether the DAC functionhas issued a warning or not.
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
Related information
• Driver Alert Control (p. 351)
Lane Keeping Aid
Lane Keeping Aid (LKA 103
) is designed to
actively steer the vehicle on freeways, highways and other major roads to help the driver reducethe risk of the vehicle unintentionally veering outof the lane.
Lake Keeping Assistance steers the vehicle back into the lane and/or alerts the driver using vibra-tions in the steering wheel. Lane Keeping Aid is active at speeds between 65-200 km/h (40-125 mph) on roads withclearly visible traffic lane marker lines. On narrow roads, the function may be unavailable and go into standby mode. The function willbecome available again when the road becomessufficiently wide.
A camera monitors the road/traffic lane's marker lines.
103 Lane Keeping Aid

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Lane Keeping Aid steers the vehicle back into its lane.
Lane Keeping Aid alerts the driver using vibrations in the steering wheel104
.
Depending on the settings used, Lane Keeping Aid functions in different ways:
• With
Assist105
activated: When the vehicle
approaches a lane marker line, LKA will actively steer the vehicle back into the laneusing light pressure on the steering wheel.
• With
Warning105
activated: If the vehicle is
about to move over a lane marker line, the driver will be alerted by vibrations in thesteering wheel.
NOTE
When the direction indicator is activated, the Lane Keeping Aid does not provide any warn-ing or intervene with steering.
WARNING
• The Lane Keeping Aid function is supple- mentary driver support intended to helpimprove driving safety – it cannot handleall situations in all traffic, weather androad conditions.
• The function is not a substitute for thedriver's attention and judgment. The driveris always responsible for ensuring thevehicle is driven in a safe manner, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.
104
The steering wheel vibrations vary. The more time the vehicle is over the lane marker line, the longer the vibrations.
105 See "LKA assistance options" under "Activating/deactivating Lane Keeping Aid".

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Lane Keeping Aid does not intervene
Lane Keeping Aid does not intervene in sharp inside curves.
In certain cases, such as when a turn signal is used or when "straightening out" an inside curve,Lane Keeping Aid will not provide steering assis-tance or alerts.
Related information
•Steering assistance with Lane Keeping Aid(p. 355)
• Lane Keeping Aid limitations (p. 356)
• Activating/deactivating Lane Keeping Aid(p. 356)
• Selecting type of assistance for Lane Keep-ing Aid (p. 356)
• Lane Keeping Aid symbols and messages(p. 358) •
Lane Keeping Aid symbols in the instrumentpanel (p. 360)
Steering assistance with LaneKeeping Aid The LKA 106
steering assistance function only
functions if the driver's hands are on the steering wheel, which the system continuously monitors.
If the driver does not keep his/her hands on the steeringwheel, the driver display showsthis symbol combined with amessage, which prompts thedriver to actively steer the car:
•Lane Keeping Aid – Apply steering
If the driver does not begin to steer the vehicle, the symbol will be displayed again, accompaniedby an audible signal and this message:
•
Lane Keeping Aid – Standby until
steering applied
If the driver still does not begin to steer the vehi- cle, LKA 106
will go into standby mode. The func-
tion will remain unavailable until the driver begins actively steering the vehicle again.
Related information
• Lane Keeping Aid (p. 353)
106
Lane Keeping Aid

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356
Activating/deactivating LaneKeeping Aid The Lane Keeping Aid (LKA107
) function can be
switched On or Off.
On/OffPress the Lane Keeping Aidbutton in the center display's Function view.
• GREEN button indicator light - LKA is acti- vated.
• GRAY button indicator light - LKA is deacti-vated.
Related information
•Lane Keeping Aid (p. 353)
Selecting type of assistance forLane Keeping Aid
The driver can determine what types of assis- tance LKA 108
should provide if the vehicle veers
from its lane.
1. Select SettingsMy CarIntelliSafe in
the center display's Top view.
2. Under
Lane Keeping Aid Mode, select
what assistance LKA should provide:
•
Assist the driver will receive steering
assistance but no warning.
•
Both - the driver will receive both steering
assistance and a warning.
•
Warning - the driver will only receive a
warning.
Related information
• Lane Keeping Aid (p. 353)
Lane Keeping Aid limitations
In certain demanding driving conditions, Lane Keeping Aid may not be able to properly assistthe driver. In these situations, it is recommendedthat the function be deactivated.
Examples of such situations include:
• road work
• winter driving conditions
• poor road surfaces
• a very sporty driving style
• bad weather with reduced visibility
• roads with indistinct or no lane markings
• sharp edges or lines other than the lane's side markings
• when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
107
Lane Keeping Aid
108 Lane Keeping Aid

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Lane Keeping Aid symbols andmessages
A number of symbols and messages related to Lane Keeping Aid LKA 109
may be displayed in
the instrument panel.
Some examples of symbols and messages are shown in the table below.
SymbolMessageMeaning
Driver support system Reduced functionality Service requiredThe system is not functioning as intended. Contact a workshop ‒ an authorized Volvo work-
shop is recommended.
Windscreen sensor Sensor blocked, see Owner's manualThe camera's ability to detect the lane in front of the vehicle is reduced.
Lane Keeping Aid Apply steeringLKA's steering assistance is disabled when the driver's hands are not on the wheel. Follow the instructions and steer the vehicle.
Lane Keeping Aid Standby until steering appliedLKA will go into standby mode until the driver begins steering the vehicle again.
109 Lane Keeping Aid

DRIVER SUPPORT
* Option/accessory.361
Steering assistance at risk ofcollision
The
Collision avoidance assistance function
is intended to help the driver reduce the risk of the vehicle inadvertently veering from the trafficlane and/or colliding with another vehicle orobstacle by actively steering the vehicle backinto the lane and/or swerving out of the way.
Collision avoidance assistance consists of
three sub-functions:
• Run-Off Mitigation with steering assistance
• Steering assistance during collision risks from oncoming traffic
• Steering assistance during collision risks from behind
*
After the system has automatically intervened, this text message will appear in the instrumentpanel:
•
Collision avoidance assistance –Automatic intervention
NOTE
It is always the driver who must decide how much the vehicle should be in control – thevehicle can never take command.
Related information
• Activating/deactivating steering assistance during collision risks (p. 361)
• Symbols and messages for steering assis-tance during collision risks (p. 369)
• Run-Off Mitigation with steering assistance(p. 362)
• Run-Off Mitigation with steering assistancelevels (p. 362)
• Activating/deactivating Run-Off Mitigationwith steering assistance (p. 363)
• Limitations of Run-Off Mitigation with steer-ing assistance (p. 363)
• Steering assistance during collision risksfrom oncoming traffic (p. 364)
• Activating/deactivating Steering assistanceduring collision risks with oncoming vehicles(p. 365)
• Limitations of steering assistance during col-lision risks from oncoming traffic (p. 365)
• Steering assistance during collision risks from behind
* (p. 366)
• Activating/deactivating Steering assistanceduring collision risks from behind
* (p. 367)
• Limitations of steering assistance during col- lision risks from behind (p. 367)
Activating/deactivating steeringassistance during collision risks The driver can choose to have this function
On
or Off .
To switch off the function:
1. Select
SettingsMy CarIntelliSafe in
the center display's Top view.
2. Deselect
Collision avoidance assistance.
> The function will be deactivated.
NOTE
When the Collision avoidance assistancefunction is deactivated, all subfunctions of the following are deactivated: • Steering assistance at risk of run-off
• Steering assistance at risk of head-on collision
• Steering assistance during collision risks from behind
*
Although it is possible to deactivate the func- tion, the driver is advised to keep it activatedsince it can help improve driving safety inmost cases.
Related information
• Steering assistance at risk of collision (p. 361)

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Run-Off Mitigation with steeringassistance
This sub-function is intended to help reduce the risk of the vehicle inadvertently running off theroad by actively steering the vehicle back ontothe road.
The function is active at speeds between 65-140 km/h (40-87 mph) on roads with clearlyvisible traffic lane markings/lines. The system uses a camera to monitor the edges of the road and the painted side marker lines. Ifthe vehicle is about to cross the edge of the road, the function will attempt to steer the vehicle back onto the road. If this is not sufficient to keep the vehicle on the road, the brakes will also be applied. However, the function will not provide either
steering assistance or braking if the turn signal is used. The function will also not be activated if it detects that the driver is actively operating thevehicle. After the system has automatically intervened, this text message will appear in the instrumentpanel:
•
Collision avoidance assistance –Automatic intervention
WARNING
• The "Steering assistance at risk of run- off" subfunction is supplementary driversupport intended to help improve drivingsafety – it cannot handle all situations inall traffic, weather and road conditions.
• The function cannot detect barriers, railsor similar obstacles at the side of theroad.
• "Steering assistance at risk of run-off" isnot a substitute for the driver's attentionand judgment. The driver is alwaysresponsible for ensuring the vehicle isdriven in a safe manner, at the appropri-ate speed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Related information
•
Steering assistance at risk of collision(p. 361)
Run-Off Mitigation with steeringassistance levels This function has two activation levels for inter- vention:
•Steering assistance only
• Steering assistance with braking
Steering assistance only
Intervention with steering assistance.

DRIVER SUPPORT
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* Option/accessory.363
Steering assistance with braking
Intervention with steering assistance and braking.
Braking intervention assists in situations where steering assistance alone is not sufficient. Brak-ing force is automatically adapted according tothe situation at the moment the vehicle begins torun off the road.
Related information
•Steering assistance at risk of collision(p. 361)
Activating/deactivating Run-OffMitigation with steering assistance The driver can choose to have this function
On
or Off .
To switch off the function:
1. Select
SettingsMy CarIntelliSafe in
the center display's Top view.
2. Deselect
Collision avoidance assistance.
> The function will be deactivated.
NOTE
When the Collision avoidance assistancefunction is deactivated, all subfunctions of the following are deactivated: • Steering assistance at risk of run-off
• Steering assistance at risk of head-on collision
• Steering assistance during collision risks from behind
*
Although it is possible to deactivate the func- tion, the driver is advised to keep it activatedsince it can help improve driving safety inmost cases.
Related information
• Steering assistance at risk of collision (p. 361)
Limitations of Run-Off Mitigationwith steering assistance
In certain demanding driving conditions, the function may not be able to properly assist thedriver. In these situations, it is recommendedthat it is turned off.
Examples of such situations include:
• road work
• winter driving conditions
• narrow roads
• poor road surfaces
• a very sporty driving style
• bad weather with reduced visibility
• roads with indistinct or no lane markings
• sharp edges or lines other than the lane's side markings
• when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".

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NOTE
The function uses the vehicle's radar unit, which has some general limitations – see thesection "Radar unit limitations".
Related information
•Steering assistance at risk of collision (p. 361)
• Speed-dependent steering wheel resistance(p. 262)
Steering assistance during collisionrisks from oncoming traffic
This sub-function can help assist a distracted driver who has not noticed that the vehicle isveering into oncoming traffic.
The function provides assistance by swerving your vehi- cle back into your own lane.
Oncoming vehicles
Own vehicle
The function is active at speeds between 60-140 km/h (37-87 mph) on roads with clearlyvisible traffic lane markings/lines. If your vehicle is starting to veer from your own lane and a vehicle is approaching from the oppo- site direction, this function can help the driversteer the vehicle back into its own lane. However, the function will
not provide steering
assistance if the turn signal is used. The functionwill also not be activated if it detects that thedriver is actively operating the vehicle. After the system has automatically intervened, this text message will appear in the instrumentpanel:
•
Collision avoidance assistance –Automatic intervention
WARNING
• The "Steering assistance at risk of head- on collision" subfunction is supplemen-tary driver support intended to improvedriving safety – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
• Pilot Assist is only activated if there is ahigh risk of collision – you must thereforenever wait for the function to intervene.
• The function is not a substitute for thedriver's attention and judgment. The driveris always responsible for ensuring thevehicle is driven in a safe manner, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.

DRIVER SUPPORT
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* Option/accessory.365
Related information
•Steering assistance at risk of collision (p. 361)
Activating/deactivating Steeringassistance during collision riskswith oncoming vehicles The driver can choose to have this function
On
or Off .
To switch off the function:
1. Select
SettingsMy CarIntelliSafe in
the center display's Top view.
2. Deselect
Collision avoidance assistance.
> The function will be deactivated.
NOTE
When the Collision avoidance assistancefunction is deactivated, all subfunctions of the following are deactivated: • Steering assistance at risk of run-off
• Steering assistance at risk of head-on collision
• Steering assistance during collision risks from behind
*
Although it is possible to deactivate the func- tion, the driver is advised to keep it activatedsince it can help improve driving safety inmost cases.
Related information
• Steering assistance at risk of collision (p. 361)
Limitations of steering assistanceduring collision risks fromoncoming traffic The function may have limited functionality in certain situations and not intervene, e.g.:
•
for smaller vehicles such as motorcycles
• on roads that do not have clear lane mark- ings
• if more than half of your vehicle has movedinto the adjacent lane
• outside the speed range 60-140 km/h(37-87 mph)
• when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
Functionality may also be reduced in other situa-tions, such as: • road work
• winter driving conditions
• narrow roads
• poor road surfaces
• a very sporty driving style
• bad weather with reduced visibility.
In these demanding driving conditions, the func-tion may not be able to properly assist the driver.In these situations, it is recommended that it isturned off.