Volvo XC 90 Owner's Manual page 280

DRIVER SUPPORT
Pilot Assist*
Pilot Assist helps the driver to drive the car
between the road lane whilst at the same time
maintaining a preselected time interval to the
preceding vehicle.
Pilot Assist provides more comfortable driving in
slow traffic (up to 50 km/h) on motorways and
main roads.
Function overview.
Camera and radar unit
Distance readers
Readers, side markings
The driver sets the desired time interval to the
preceding vehicle. Pilot Assist scans the preced-
ing vehicle and the lane markings with the cam-
era and radar unit. The preset time interval is
maintained with automatic speed adjustment
278
whilst the steering assistance helps to position
the car in the lane.
Pilot Assist steering assistance takes into
account the speed of the preceding car and the
lane markings. The driver can at any time ignore
the Pilot Assist steering recommendation and
steer in another direction, e.g. to change lane or
avoid an obstruction on the road.
If the camera and radar unit does not sense the
lane markings or a preceding vehicle, Pilot Assist
is set in the standby mode.
When Pilot Assist is in the standby mode and the
car comes too close to a preceding vehicle, the
driver is instead warned by the Distance warning
for the short distance (refer to Distance warning
at the end of this section).
WARNING
Pilot Assist is an aid which cannot handle all
traffic, weather and road conditions.
The driver must always be observant with
regard to the prevailing traffic conditions and
intervene when Pilot Assist is not maintaining
a suitable speed or suitable distance.
Read all the sections about this function in
the owner's manual in order to learn about its
limitations, of which the driver should be
aware before the function is used.
Pilot Assist must only be used if there are
clear lane lines painted on the road surface
on each side of the lane. All other use
involves increased risk of contact with sur-
rounding obstacles that are not detected by
the function.
The driver always bears responsibility for how
the car is controlled as well as for maintaining
the correct distance and speed, even when
Pilot Assist is being used.
Pilot Assist attempts to regulate the speed
smoothly. In situations that demand sudden brak-
ing the driver must brake himself/herself. This
applies in case of large speed differences or if
the vehicle in front brakes suddenly. Due to the
limitations of the camera and radar unit, braking
may come unexpectedly or not at all.
The stored speed for the Pilot Assist is preset to
50 km/h and cannot be adjusted - if the speed
* Option/accessory, for more information, see Introduction.