2020 VOLVO S90 brake light

DRIVER SUPPORT
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* Option/accessory.315
Related information
City Safety
™ (p. 312)
City Safety in crossing traffic (p. 318)
City Safety braking for oncoming vehicles (p. 321)
City Safety limitations (p. 322)
Head-up display
* (p. 139)
Seat belt tensioners (p. 50)
Setting a warning distance for City Safety
City Safety 53
is always active, but the func-
tion's warning distance can be adjusted.
NOTE
The City Safety function cannot be deacti- vated. It is activated automatically eachtime the engine/electric motor is started.
The alert distance determines the sensitivity of the system and regulates the distance atwhich the light, sound and brake pulsationswill be activated. To select warning distance:
1. Select
SettingsMy CarIntelliSafein the center display's Top view.
2. Under
City Safety Warning, tap Late,Normal or Early to set the desired warn-
ing distance.
If the driver feels that the
Early setting is giv-
ing too many warnings or finds them irritating, the
Normal or Late warning distance settings
can be selected instead. If the driver feels that the warnings are too fre- quent and distracting, the warning distancecan be reduced. This will reduce the total number of warnings, but it will also result inCity Safety providing warnings at a later stage. The
Late warning distance setting should
therefore only be used in exceptional cases, such as when a more dynamic driving style ispreferred.
53 This function is not available on all markets.

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WARNING
No automatic system can guarantee 100% correct function in all situations.You should therefore never test use ofCity Safety in the direction of people,animals or vehicles – this could lead tosevere damage, serious personal injuryor even death.
City Safety warns the driver if there is arisk of collision, but the function cannotreduce the driver's reaction time.
Even if the warning distance has been set to
Early, warnings may be per-
ceived as late in certain situations – e.g. when there are large speed differ-ences or if the vehicle ahead suddenlybrakes heavily.
With the warning distance set to
Early,
warnings come further in advance. This may cause the warnings to come morefrequently than with warning distance
Normal, but is recommended since it
can make City Safety more effective.
NOTE
The warning with direction indicators for Rear Collision Warning * is deactivated if
the collision warning distance in the City Safety function is set to the lowest level "
Late".
The seat belt tensioning and braking func- tions remain active.
Related information
City Safety
™ (p. 312)
City Safety limitations (p. 322)
Rear Collision Warning
* (p. 326)
Detecting obstacles with City Safety
City Safety 54
can help the driver detect other
vehicles, cyclists, large animals and pedes- trians.
VehiclesCity Safety can detect most vehicles that are stationary or are moving in the same directionas your vehicle. In some cases, it can alsodetect oncoming vehicles and crossing traffic. For City Safety to be able to detect a vehicle in the dark, its headlights and taillights must beon and clearly visible.
Cyclists
Examples of what City Safety would interpret to be a cyclist: clear body and bicycle shapes.
54 This function is not available on all markets.

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For good performance, the system's function for cyclist detection needs the clearest possi-ble information about the contours of the bicy-cle and of the cyclist's head, arm, shoulders,legs, torso and lower body in combinationwith normal human movements. If large portions of the cyclist's body or the bicycle itself are not visible to the function'scamera, it will not be able to detect a cyclist. The system can only detect adult cyclists rid- ing on bicycles intended for adults.
WARNING
City Safety is supplementary driver sup- port, but it cannot detect all cyclists in allsituations and, for example, cannot see:
partially obscured cyclists.
cyclists if the background contrast of the cyclist is poor - warning and brakeinterventions may then be late or notoccur at all.
cyclists in clothing that hides theirbody contour.
bikes loaded with large objects.
The driver is always responsible for ensur- ing that the vehicle is driven correctly andwith a safety distance suitable for thespeed.
Pedestrians
Examples of what the system considers to be a pedestrian: clear body contours.
For good performance, the system's function for pedestrian detection needs the clearestpossible information about the contours of thepedestrian's head, arm, shoulders, legs, torsoand lower body in combination with normalhuman movements. In order to detect a pedestrian, there must be a contrast to the background, which coulddepend on clothing, weather conditions, etc. Ifthere is little contrast, the person may bedetected late or not at all, which may result ina delayed reaction from the system or no reac-tion at all. City Safety can detect pedestrians even in dark conditions if they are illuminated by thevehicle's headlights.
WARNING
City Safety is supplementary driver sup- port, but it cannot detect all pedestrians inall situations and, for example, cannot see:
partially obscured pedestrians, people in clothing that hides their body con-tour or pedestrians shorter than 80 cm(32 in.).
pedestrians if the background contrastof the pedestrians is poor - warningand brake interventions may then belate or not occur at all.
pedestrians who are carrying largeobjects.
The driver is always responsible for ensur- ing that the vehicle is driven correctly andwith a safety distance suitable for thespeed.

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Large animals
Examples of what City Safety would interpret as a large animal: stationary or moving slowly and withclear body contours.
For good performance, the system's function for detecting large animals (e.g. moose,horses, etc.) needs the clearest possible infor-mation about body contours. This entailsbeing able to detect the animal straight fromthe side in combination with normal move-ments for that animal. If parts of the animal's body are not visible to the function's camera, the system will not beable to detect the animal. City Safety can detect large animals even in dark conditions if they are illuminated by thevehicle's headlights.
WARNING
City Safety is supplementary driver sup- port, but it cannot detect all large animalsin all situations and, for example, cannotsee: partially obscured larger animals.
larger animals seen from the front or from behind.
running or fast moving larger animals.
larger animals if the contrast of the ani-mal's background is poor - warningand brake interventions may thenoccur late or not at all.
smaller animals such as cats and dogs.
The driver is always responsible for ensur- ing that the vehicle is driven correctly andwith a safety distance suitable for thespeed.
Related information
City Safety
™ (p. 312)
City Safety limitations (p. 322)
City Safety in crossing traffic City Safety 55
can assist the driver when turn-
ing into the path of an oncoming vehicle in an intersection.
Sector in which City Safety can detect an oncoming vehicle in crossing traffic.
In order for City Safety to detect an oncomingvehicle in situations where there is a risk of acollision, that vehicle must be within the sec-tor in which City Safety can analyze the situa-tion. The following criteria must also be met:
your vehicle's speed must be at least 4 km/h (3 mph)
your vehicle must be making a left turn
the oncoming vehicle's headlights mustbe on
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your lane must have clear side lane mark- ings
your vehicle must be positioned straight inyour lane
the oncoming vehicle must be positionedwithin your vehicle's lane markings
the oncoming vehicle's headlights mustbe on
the function can only handle “front-to-front” collisions
the function can only detect vehicles withfour wheels.
WARNING
Warnings and brake interventions due to an imminent collision with an oncomingvehicle always come very late.
Related information

City Safety
™ (p. 312)
City Safety limitations (p. 322)
City Safety limitations
City Safety 57
functionality may be reduced in
certain situations.
Surroundings
Low objects
Hanging objects, such as flags for overhang- ing loads or accessories such as auxiliarylights or front protective grids that extendbeyond the height of the hood, may limit City Safety functionality.
Slippery road conditions
The extended braking distance on slippery roads may reduce City Safety's capacity tohelp avoid a collision. In these types of situa-tions, the Anti-lock Braking System and Elec- tronic Stability Control (ESC 58
) are designed
for optimal braking power with maintained stability.
Backlighting
The visual warning signal in the windshield may be difficult to detect in bright sunlight, ifthere are reflections, or if the driver is wearingsunglasses or not looking straight ahead.
Heat
If the temperature in the passenger compart- ment is high due to e.g. bright sunlight, thevisual warning signal in the windshield may betemporarily disabled.
Camera and radar sensor's field of vision
The camera's field of vision is limited and in certain situations, it may be unable to detectpedestrians, large animals, cyclists or vehicles,or it may detect them later than expected. Vehicles that are dirty may be detected later than clean vehicles, and in dark conditions,motorcycles may be detected late or not at all. If a text message displayed in the instrument panel indicates that the camera/radar sensoris obstructed, it may be difficult for City Safetyto detect pedestrians, large animals, cyclists,vehicles or lane markings in front of the vehi-cle. City Safety functionality may therefore bereduced. Text messages may not be displayed for all sit- uations in which the windshield sensors areblocked. The driver must therefore alwayskeep the windshield in front of the camera/radar sensor clean.
CAUTION
Only a workshop may perform mainte- nance on driver support components – anauthorized Volvo workshop is recom-mended.
57 This function is not available on all markets.
58 Electronic Stability Control

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Driver intervention
Backing up
City Safety is temporarily deactivated when the vehicle is backing up.
Low speed
City Safety is not activated at very low speeds under 4 km/h (3 mph). The system will there-fore not intervene in situations in which yourvehicle is approaching another vehicle veryslowly, such as when parking.
Active driver
Action by the driver always has priority. City Safety will therefore not react or will react at alater stage with a warning or intervention insituations in which the driver is clearly steeringand operating the accelerator pedal, even if acollision is unavoidable. An active and aware driving style may there- fore delay collision warnings and interventionin order to minimize unnecessary warnings.
Other limitations
WARNING
The driver support system only issues a warning for obstacles detected by its radarsensor – thus, a warning may come after adelay or not at all. Never wait for a warning or assistance. Apply the brakes when necessary.
WARNING
Warnings and brake interventions can be triggered late or not at all if the traf-fic situation or external influences pre-vent the camera and radar unit fromproperly detecting pedestrians,cyclists, large animals or vehiclesahead of the vehicle.
To be able to detect vehicles at night,its front and rear lights must work andilluminate clearly.
The camera and radar unit have a lim-ited range for pedestrians and cyclists– the system can provide effectivewarnings and brake interventions if therelative speed is lower than 50 km/h(30 mph). For stationary or slow-mov-ing vehicles, warnings and brake inter-ventions are effective at vehicle speedsof up to 70 km/h (43 mph). Speedreduction for large animals is less than15 km/h (9 mph) and can be achievedat vehicle speeds over 70 km/h(43 mph). At lower speeds, the warn-ing and brake intervention for large ani-mals is less effective.
Warnings for stationary or slow-mov-ing vehicles and large animals can bedisengaged due to darkness or poorvisibility.
Warnings and brake interventions for pedestrians and cyclists are disen-gaged at vehicle speeds over 80 km/h(50 mph).
Do not place, affix or mount anythingon the inside or outside of the wind-shield, or in front of or around the cam-era and radar unit – this could disruptcamera-based functions.
Objects, snow, ice or dirt in the area ofthe camera sensor can reduce thefunction, disengage it completely orgive an improper function response.

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Related information
Driver support systems (p. 266)
Activating or deactivating Cross Traffic Alert
* (p. 332)
Cross Traffic Alert
* limitations (p. 332)
Cross Traffic Alert
* messages (p. 334)
BLIS
* (p. 327)
Park Assist
* (p. 355)
Activating or deactivating Cross Traffic Alert *69
The driver can select to switch off the warn-
ing in the function Cross Traffic Alert (CTA) –
the sub-function auto brake cannot be
switched off and continues to be active.
Activate or deactivate the function using this button inthe center display's Functionview.
GREEN button indicator light – the func- tion is activated.
GRAY button indication – warning signaland indication on display for the functionis deactivated.
The function is automatically activated eachtime the engine is started.
Related information
Cross Traffic Alert
* (p. 331)
Cross Traffic Alert
* limitations (p. 332)
Cross Traffic Alert *70
limitations
The Cross Traffic Alert (CTA) function with auto brake may have limited functionality in
certain situations. Auto-brake is active atspeeds under 15 km/h (9.3 mph).
WARNING
The auto-brake sub-function can only
detect and apply the brakes for other mov- ing vehicles – not for e.g. stationary obsta-
cles, cyclists or pedestrians.
CTA has certain limitations – The CTA sen- sors, for example, cannot "see" through otherparked vehicles or objects blocking the vehi-cle. Below are a few examples of situations in which CTA's field of vision may be initially lim-ited and approaching vehicles may thereforenot be detected until they are very close toyour vehicle:
69 Warning for crossing traffic when the vehicle is backing up.
70 Warning for crossing traffic when the vehicle is backing up.

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Park Assist front, rear and sides *
Park Assist behaves differently depending on which part of the vehicle is approaching anobstacle.
Front camera
The warning signal has a continuous tone when the obstacle is less than approx. 30 cm (1 ft) from thevehicle.
The Park Assist system's front sensors are automatically activated when the engine isstarted. They are active at speedsbelow 10 km/h (6 mph). The distance monitored extends approx. 80 cm (2.5 ft) in front of the vehicle.
NOTE
The Park Assist system is deactivated when the parking brake is used or when P
is selected on vehicles with automatictransmission.
CAUTION
When installing auxiliary lights: Make sure these do not obscure the sensors – theauxiliary lights could be perceived as anobstacle.
Back
The warning signal has a continuous tone when the obstacle is less than approx. 30 cm (1 ft) from thevehicle.
The rear sensors will be activated if the vehicle begins rolling backward or if reverse gear isengaged. The distance monitored extends approx. 1.5 meters (5 ft) behind the vehicle.
Side sensors
The warning signal will begin pulsating rapidly when the obstacle is less than approx. 25 cm (0.8 ft) fromthe vehicle.
Park Assist's side sensors are automatically activated when the engine is started. They areactive at speeds below 10 km/h (6 mph). The distance monitored is approx. 25 cm (0.8 ft) out from the sides. The detection area of the side sensors increa- ses significantly, however, when the steering angle of the front wheel increases and depending on the position of the steeringwheel, obstacles up to approx. 90 cm (3 ft)