Roll Stability Control; Speed Limiter - Volvo S90 Owner's Manual

DRIVER SUPPORT

Roll Stability Control

Roll Stability Control (RSC) is a stabiliser sys-
tem that minimises the risk of overturning, for
example during sudden evasive manoeuvres or if
the car skids.
The RSC system registers if and how much the
car's lateral inclination changes. This information
is used to calculate the risk of the car overturn-
ing. If the car is at risk, its electronic stability con-
trol system engages, the engine torque is
reduced and one or more wheels are braked until
the car has regained its stability.
WARNING
Under normal driving conditions, the RSC sys-
tem improves the car's road safety, but this
must not be taken as a reason to increase
speed. Always follow the normal precautions
for safe driving.
Related information
•
Electronic stability control (p. 260)
•
Safety (p. 56)
NOTE: The illustration is schematic - details may vary depending on car model.
2
264

Speed limiter*

A speed limiter (Speed Limiter — SL) can be
regarded as a reverse cruise control — the
driver regulates the speed using the accelerator
pedal but is prevented by the speed limiter from
accidentally exceeding a pre-selected/preset
maximum speed.
Overview
2
Buttons and symbols for functions .
Increase the stored maximum speed or reac-
tivate the speed limiter and resume the
stored maximum speed
Activate the speed limiter and store the cur-
rent speed, or deactivate the speed limiter
Reduces stored maximum speed
Marker for stored max speed
The car's current speed
Stored maximum speed
WARNING
The Speed Limiter is an aid and cannot deal
with all traffic, weather and road conditions.
The driver must always pay attention to traffic
conditions and take action when the Speed
Limiter is not maintaining a suitable speed.
The driver always has the ultimate responsibil-
ity for the car being driven safely and in
accordance with applicable traffic rules and
regulations, even when the Speed Limiter
function is in use.
Limitations
On steep downhill gradients the speed limiter's
braking effect may be inadequate and hence the
stored maximum speed may be exceeded. In this
case, the driver is alerted by the message
limit exceeded in the driver display.
NOTE
A text message that the maximum speed is
exceeded will be activated if the speed has
been exceeded by at least 3 km/h
(approx. 2 mph).
* Option/accessory, for more information, see Introduction.
Speed