Volvo V90 (2021 year). Manual in english - page 19

City Safety messages (p. 342)

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City Safety sub-functions

City Safety

can help prevent a collision or

lower the vehicle's speed at the point of
impact. The function consists of several sub-
functions.

Ability to reduce speed

If the difference in speed between your vehicle
and the obstacle is greater than the speeds
specified below, the City Safety auto-brake
function cannot prevent a collision, but it can
help mitigate its effects.

Vehicles

City Safety can help prevent a collision with a
vehicle ahead by reducing your vehicle's speed
by up to 60 km/h (37 mph).

Cyclists

City Safety can help prevent a collision with a
cyclist ahead by reducing your vehicle's speed
by up to 50 km/h (30 mph).

Pedestrians

City Safety can help prevent a collision with a
pedestrian ahead by reducing your vehicle's
speed by up to 45 km/h (28 mph).

Large animals

If there is a risk of colliding with a large ani-
mal, City Safety can help reduce your vehicle's
speed by up to 15 km/h (9 mph).

The braking function for large animals is pri-
marily intended to mitigate the force of a colli-
sion at higher speeds. Braking is most effec-
tive at speeds above 70 km/h (43 mph) and
less effective at lower speeds.

City Safety steps

City Safety carries out three steps in the fol-
lowing order:

1. Collision warning
2. Brake assistance
3. Auto-brake

This function is not available on all markets.

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1 - Collision warning

The driver is first alerted to the risk of an immi-
nent collision.

In vehicles equipped with a head-up display

a flashing warning symbol will be displayed on
the windshield.

Collision warning symbol on the windshield

Visual warnings on the windshield may be
difficult to notice in cases of strong sun-
light, reflections, extreme light contrasts,
or if the driver is wearing sunglasses or is
not looking straight ahead.

City Safety can detect pedestrians, cyclists or
vehicles that are stationary, are moving in the
same direction as your vehicle and are ahead
of your vehicle. City Safety can also detect

pedestrians, cyclists or large animals that are
crossing the road in front of your vehicle.

If there is a risk of a collision with a pedestrian,
large animal, cyclist or another vehicle, the
driver will be alerted with light, sound and pul-
sations in the brake pedal. At lower speeds,
during hard braking or if the accelerator pedal
is pressed, the brake pedal pulsation warning
will not be given. The intensity of the brake
pedal pulsations varies according to the vehi-
cle's speed.

2 - Brake assistance

If the risk of a collision increases after the colli-
sion warning, brake support will be activated.

If the system determines that the pressure the
driver is exerting on the brake pedal is insuffi-
cient to prevent the collision, brake support
will increase pressure.

3 - Auto-brake

The automatic braking function is activated at
the last moment.

If the driver has not taken evasive action by
this stage and a collision is imminent, the
automatic braking function will be triggered.
This occurs whether or not the driver is press-
ing the brake pedal. Full braking force will be
applied to reduce the speed at impact or
reduced braking effect will be applied if this is
sufficient to avoid the collision.

The seat belt tensioner may be activated when
the automatic braking function is triggered.

In certain situations, auto-braking may begin
with a limited braking force before applying
full braking force.

If City Safety has prevented a collision, the
vehicle will be kept at a standstill until the
driver takes action. If the vehicle has slowed to
avoid colliding with a slower-moving vehicle
ahead, your speed will be reduced to that vehi-
cle's speed.

Auto-braking can always be cancelled if the
driver presses hard on the accelerator pedal.

When City Safety activates the brakes, the
brake lights come on.

When City Safety applies the brakes, a text
message will appear in the instrument panel
to notify the driver that the function is/was
activated.

WARNING

City Safety may not be used to change

how the driver operates the vehicle. The

driver must not only rely on City Safety to

brake the vehicle.

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Related information

•

City Safety in crossing traffic (p. 335)

•

•

City Safety braking for oncoming vehicles
(p. 338)

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Seat belt tensioners (p. 52)

•

Head-up display

(p. 146)

•

Setting a warning distance for City

Safety

City Safety

is always active, but the func-

tion's warning distance can be adjusted.

The City Safety function cannot be deacti-
vated. It is activated automatically each
time the engine/electric motor is started.

The alert distance determines the sensitivity of
the system and regulates the distance at
which the light, sound and brake pulsations
will be activated.

To select warning distance:

1. Select

Settings

My Car

IntelliSafe

in the center display's Top view.

2. Under

City Safety Warning

, tap

Late

Normal

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

Late

warning distance settings

can be selected instead.

If the driver feels that the warnings are too fre-
quent and distracting, the warning distance
can be reduced. This will reduce the total

number of warnings, but it will also result in
City 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 is
preferred.

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 of
City Safety in the direction of people,
animals or vehicles – this could lead to
severe damage, serious personal injury
or even death.

•

City Safety warns the driver if there is a
risk of collision, but the function cannot
reduce 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 suddenly
brakes heavily.

•

With the warning distance set to

Early

warnings come further in advance. This
may cause the warnings to come more
frequently than with warning distance

Normal

, but is recommended since it

can make City Safety more effective.

Related information

•

•

•

Rear Collision Warning

(p. 349)

Detecting obstacles with City

Safety

City Safety

can help the driver detect other

vehicles, cyclists, large animals and pedes-
trians.

Vehicles

City Safety can detect most vehicles that are
stationary or are moving in the same direction
as your vehicle. In some cases, it can also
detect oncoming vehicles and crossing traffic.

For City Safety to be able to detect a vehicle in
the dark, its headlights and taillights must be
on and clearly visible.

Cyclists

Examples of what City Safety would interpret to be a

cyclist: clear body and bicycle shapes.

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 combination
with normal human movements.

If large portions of the cyclist's body or the
bicycle itself are not visible to the function's
camera, 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 all

situations and, for example, cannot see:

•

partially obscured cyclists.

•

cyclists if the contrast to the cyclist's
background is poor.

•

cyclists in clothing that hides their
body contour.

•

bikes loaded with large objects.

Warnings and brake interventions may

occur late or not at all. The driver is always

responsible for ensuring that the vehicle is

driven correctly and with a safety distance

suitable for the speed.

This function is not available on all markets.

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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 clearest
possible information about the contours of the
pedestrian's head, arm, shoulders, legs, torso
and lower body in combination with normal
human movements.

In order to detect a pedestrian, there must be
a contrast to the background, which could
depend on clothing, weather conditions, etc. If
there is little contrast, the person may be
detected late or not at all, which may result in
a 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 the
vehicle's headlights.

WARNING

City Safety is supplementary driver sup-

port, but it cannot detect all pedestrians in

all 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 contrast to the
pedestrian's background is poor.

•

pedestrians who are carrying large
objects.

Warnings and brake interventions may

occur late or not at all. The driver is always

responsible for ensuring that the vehicle is

driven correctly and with a safety distance

suitable for the speed.

Large animals

Examples of what City Safety would interpret as a

large animal: stationary or moving slowly and with

clear 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 entails
being able to detect the animal straight from
the 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 be
able to detect the animal.

City Safety can detect large animals even in
dark conditions if they are illuminated by the
vehicle's headlights.

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WARNING

City Safety is supplementary driver sup-

port, but it cannot detect all large animals

in all situations and, for example, cannot

see:

•

partially obscured larger animals.

•

larger animals seen from the front or
from behind.

•

running or fast moving larger animals.

•

larger animals if the contrast to the ani-
mal's background is poor.

•

smaller animals such as cats and dogs.

Warnings and brake interventions may

occur late or not at all. The driver is always

responsible for ensuring that the vehicle is

driven correctly and with a safety distance

suitable for the speed.

Related information

•

•

City Safety in crossing traffic

City Safety

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 oncoming
vehicle in situations where there is a risk of a
collision, 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 must
be on

Related information

•

•

This function is not available on all markets.

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Limitations of City Safety in

crossing traffic

In certain situations, it may be difficult for
City Safety to help the driver avoid a collision
with crossing traffic.

For example:

•

On slippery roads when Electronic Stabil-
ity Control (ESC) is actively operating.

•

If an approaching vehicle is detected at a
late stage.

•

If the oncoming vehicle is partially
obstructed by another vehicle or object.

•

If the oncoming vehicle's headlights are
off.

•

If the oncoming vehicle is moving errati-
cally and e.g. suddenly changes lanes at a
late stage.

City Safety in crossing traffic (p. 335)

The function uses the vehicle's camera and
radar sensor, which has certain general
limitations.

Related information

•

•

Camera/radar sensor limitations (p. 388)

•

City Safety steering assistance for

evasive maneuver

City Safety steering assistance can help the
driver steer away from a vehicle/obstacle
when it is not possible to avoid a collision by
braking alone. City Safety steering assistance
is always activated and cannot be switched
off.

Your vehicle swerves away

Slow-moving/stationary vehicle or obsta-
cle.

City Safety helps provide assistance by
strengthening the driver's steering move-
ments, but only if the driver has begun evasive
action and the system detects that the driver's
steering movements are not sufficient to avoid
a collision.

The brake system is used simultaneously to
further strengthen steering movements. The

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337

function also helps stabilize the vehicle after it
has passed the obstacle.

City Safety steering assistance can detect:

•

vehicles

•

cyclists

•

pedestrians

•

large animals

Related information

•

City Safety steering assistance limitations
during evasive maneuvers (p. 337)

•

•

City Safety steering assistance

limitations during evasive

maneuvers

City Safety steering assistance may have lim-
ited functionality in certain situations and not
intervene, e.g.:

•

at speeds outside the range of
50-100 km/h (30-62 mph)

•

if the driver does not take evasive action

•

if speed-dependent power steering wheel
resistance is working at reduced power –
e.g. during cooling due to overheating.

City Safety steering assistance for evasive
maneuver (p. 336)

The function uses the vehicle's camera and
radar sensor, which has certain general
limitations.

Related information

•

•

Speed-dependent steering wheel resis-
tance (p. 276)

•

•

Camera/radar sensor limitations (p. 388)

Automatic braking during delayed

evasive maneuvers with City

Safety

City Safety

can assist the driver by auto-

matically braking the vehicle when it is not
possible to avoid a collision by steering alone.

City Safety assists the driver by periodically
attempting to predict possible "escape
routes" to the sides of the vehicle in the event
a slow-moving or stationary vehicle were to be
detected at a late stage.

Your vehicle (1) cannot detect any potential escape

routes for veering away from the vehicle ahead (2)

and may therefore apply the brakes at an earlier

stage.

Own vehicle

Slow-moving/stationary vehicles

This function is not available on all markets.

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City Safety will not intervene to automatically
apply the brakes if it is possible for the driver
to avoid a collision by steering the vehicle.

However, if City Safety determines that an
evasive maneuver would not be possible due
to traffic in the adjacent lane(s), the function
can assist the driver by automatically starting
to apply the brakes at an earlier stage.

Related information

•

•

City Safety braking for oncoming

vehicles

City Safety can help you apply the brakes for
an oncoming vehicle in your lane.

If an oncoming vehicle veers into your lane
and a collision is unavoidable, City Safety can
help reduce your vehicle's speed to attempt to
mitigate the force of the collision.

Own vehicle

Oncoming vehicles

The following criteria must be met for the
function to work:

•

your vehicle's speed must be above
4 km/h (3 mph)

•

the road must be straight

•

your lane must have clear side lane mark-
ings

•

your vehicle must be positioned straight in
your lane

•

the oncoming vehicle must be positioned
within your vehicle's lane markings

•

the oncoming vehicle's headlights must
be on

•

the function can only handle “front-to-
front” collisions

•

the function can only detect vehicles with
four wheels.

WARNING

Warnings and brake interventions due to

an imminent collision with an oncoming

vehicle always come very late.

Related information

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City Safety limitations

City Safety

functionality may be reduced in

certain situations.

Surroundings

Low objects

Hanging objects, such as flags for overhang-
ing loads or accessories such as auxiliary
lights or front protective grids that extend
beyond 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 to
help avoid a collision. In these types of situa-
tions, the Anti-lock Braking System and Elec-
tronic Stability Control (ESC

) 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, if
there are reflections, or if the driver is wearing
sunglasses or not looking straight ahead.

Heat

If the temperature in the passenger compart-
ment is high due to e.g. bright sunlight, the
visual warning signal in the windshield may be
temporarily 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 detect
pedestrians, 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 or radar sen-
sor is obstructed, it may be difficult for City
Safety to detect pedestrians, large animals,
cyclists, vehicles or lane markings in front of
the vehicle. City Safety functionality may
therefore be reduced.

Text messages may not be displayed for all sit-
uations in which the windshield sensors are
blocked. The driver must therefore always
keep the windshield in front of the camera/
radar sensor clean.

CAUTION

Only a workshop may perform mainte-
nance on driver support components – an
authorized Volvo workshop is recom-
mended.

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 your
vehicle is approaching another vehicle very
slowly, such as when parking.

Active driver

Action by the driver always has priority. City
Safety will therefore not react or will react at a
later stage with a warning or intervention in
situations in which the driver is clearly steering
and operating the accelerator pedal, even if a
collision is unavoidable.

An active and aware driving style may there-
fore delay collision warnings and intervention
in order to minimize unnecessary warnings.

This function is not available on all markets.

Electronic Stability Control

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Important warnings

WARNING

The driver support system only issues a

warning for obstacles detected by its radar

sensor – thus, a warning may come after a

delay 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 from
properly detecting pedestrians,
cyclists, large animals or vehicles
ahead of the vehicle.

•

To be able to detect vehicles at night,
its front and rear lights must work and
illuminate clearly.

•

The camera and radar unit have a lim-
ited range for pedestrians and cyclists
– the system can provide effective
warnings and brake interventions if the
relative 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 speeds
of up to 70 km/h (43 mph). Speed
reduction for large animals is less than
15 km/h (9 mph) and can be achieved
at 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 be
disengaged due to darkness or poor
visibility.

•

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 anything
on the inside or outside of the wind-
shield, or in front of or around the cam-
era and radar unit – this could disrupt
camera-based functions.

•

Objects, snow, ice or dirt in the area of
the camera sensor can reduce the
function, disengage it completely or
give an improper function response.

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WARNING

•

The City Safety auto-brake function
can prevent a collision or reduce colli-
sion speed, but to ensure full brake
performance the driver should always
depress the brake pedal – even when
the car auto-brakes.

•

The warning and steering assistance
are only activated if there is a high risk
of collision – you must therefore never
wait for the collision warning or City
Safety to intervene.

•

Warnings and brake interventions for
pedestrians and cyclists are disen-
gaged at vehicle speeds over 80 km/h
(50 mph).

•

City Safety does not activate auto-
braking intervention during heavy
acceleration.

The function uses the vehicle's camera and
radar sensor, which has certain general
limitations.

Market limitations

City Safety is not available in all countries. If
City Safety is not shown in the center display's

Settings

menu, your vehicle is not equipped

with this function.

In the center display's Top view, tap:

•

Settings

My Car

IntelliSafe

Related information

•

Camera/radar sensor limitations (p. 388)

•

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City Safety messages

A number of messages related to City Safety
may be displayed in the instrument panel.
Several examples are provided below.

Message

Meaning

City Safety

Automatic intervention

When City Safety is braking or has activated the automatic braking function, one or more symbols may
illuminate in the instrument panel and a text message may be displayed.

City Safety

Reduced functionality Service
required

The system is not functioning as intended. Contact a workshop

An authorized Volvo workshop is recommended.

A text message can be erased by briefly press-
ing the

button in the center of the right-

side steering wheel keypad.

If a message cannot be erased, contact a
workshop

Related information

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